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Looking for Dabie Mountain Ruby

Release date:2018-09-28  source:中南选矿网  Browse times:492
July birthstone _ ruby ruby
The international gem world has defined ruby as "July Birthstone". The magnificent and luxurious ruby is the king of gems. It is a symbol of nobleness, love and love. It is said that people wearing rubies will live long and healthy, love and family harmony. Ruby has a hard texture and is second only to diamonds. With one of its edges, it is easy to draw a line on the surface of the glass.
 
Mysterious ruby
1660年就被镶嵌在英帝国国王王冠上的重约170克拉的

In 1660, it was inlaid in the King of the British Empire.

The crown of the "170 karat" black prince red

"Gemstone" (Black Prince’s Ruby) recently

It was identified as a red spinel. (

Details "The spinel - the liar to the highest realm

Ruby rubies without pressure") Gemstone Supreme Tiny - Ruby

In Conan Doyle's novel "Sherlock Holmes", there is an "Abbas Ruby Case". Masterman and his sister cooperated to steal the Abbas Ruby. Masterman did this because the ruby ​​was worth a fortune and could pay off huge gambling debts for him. In the novel, Abbas Ruby is nothing more than a fictional prop. In fact, there is no such ruby ​​in the real world. However, this story can be illustrated from one side, the high value of ruby ​​in people's minds.

In the gem world, there are not many gemstones that can compete with diamonds, and ruby ​​is one of them. In the glamorous fashion river, if the diamond is the supreme king who is always active in the popular front, then the ruby ​​should be regarded as the supreme queen.

Ruby has always been loved

一品顶戴上衔红宝石

In the Sanskrit record of the top of a product, the ancient Indians were obsessed with the mysterious color of this gem, calling it "Ruo Tanjia Ruji", which means "the king of gems". In the eyes of ancient Indians, rubies symbolize the never-ending flame, and in Western legends, rubies are the most precious of the twelve kinds of stones created by God, so the fourth gem on Aaron's vestments is ruby. . This ruby ​​is engraved with the sacred name, which has been the ornament of the king's crown since the Jews declared the establishment of the kingdom of Israel.

Pigeon blood red ruby ​​is top grade

Ruby's English name Ruby comes from Latin, meaning "red". The so-called ruby ​​is actually a red corundum gem. It includes all red-tone corundum gemstones from light red to deep red. The chemical formula is Al2O3 (Al2O3). It is red due to a trace of impurity element Cr (chromium). It belongs to the corundum mineral, trigonal system. The higher the chromium content, the brighter the color. Blood red ruby, commonly known as "pigeon blood red", is most cherished by people. The Chinese also like the ruby ​​very much. The top of the Qing Dynasty is the ruby.

Myanmar is the most famous ruby ​​producing area in the world.

The world's most famous ruby ​​producing area is Mogok in the northeast of Mandalay, Myanmar. In the legendary mines of Mogok, people often scoop out pure rubies called "pigeons". The ancients who have never studied chemistry believe that it is the embodiment of a dead bird. And the Burmese are crazy about ruby ​​to the point: believe in ruby? Bless people are not hurt. To do this, the holder must cut a small opening in his body and insert the gem into it. It is said that the samurai sword that has given this operation is invulnerable.

In the depths of the Dabie Mountains in Anhui Province, there are also precious rubies, but they have been little known for decades.

Treasure hunt

In the past 60 years, new diamond mines have been discovered almost every month in the world. Compared to this, the ruby ​​mines around the world are pitiful. However, the "Big Mountain" in the hinterland of China's Central Plains is said to produce beautiful rubies. Do you believe it? Mo said that it is a foreign friend, even those who live in the Dabie Mountains do not believe: "Iron ore, gold mine is heard I have never heard of a gem mine in my hometown..."

一对6.27克拉的私人珍藏珍稀鸽血红宝石

A pair of 6.27-carat private collection of rare pigeon blood ruby ​​Dabie Mountain location

The Dabie Mountains are connected to the three provinces of Hubei, Henan and Anhui. The east and west stretches about 380 kilometers and the north and south are about 175 kilometers wide. It is a famous mountain range in the Central Plains. It is the first step from the east to the west of the Chinese mainland. It is also the watershed between the Yangtze River and the Huaihe River.

"Shangshu·Gongong" says that its mountains and rivers are covered with mountains and rivers, but it is not related to other large mountains. It has its own style and is called "Dabie Mountain". The Dabie Mountains are ancient and have a complex geological origin, so they contain unusually rich minerals.

For the first time, I went to Dabie Mountain to find rubies.

It is said that there are Dabie Mountain rubies in "Huoshan A, B, Jinzhai W River, Erdao River, Hubei Yingshan Jiadi River". When I got this kind of information, I had a strange excitement in my heart, so I decided to go to the mountain to visit. Accompanied by the jade collector Wang Shi Nian, there are two gem lovers.

The car departed from Hefei, along the 312 National Road, past Lu'an, turned to Huoshan, and trudged for two hours into the Dabie Mountains. The mountain shape is turned back, and the small mountain gradually becomes taller. The mountain road also changes from a gentle to a narrow steep slope. It is often a U-shaped big bend, which is very capable of testing the technical level of the driver.

It is the weather in late autumn, the green and yellow spots on the hillside are mixed, and the colors are mixed and harmonious. only the green vegetables in the small vegetable garden next to the mountainside farmhouse are still fresh and tender, and the people in the car are tempted to jump out of the car and pull two to fill the mouth and eat raw. The vegetables here must be pure natural and non-polluting vegetables. The taste is definitely excellent.

The mountain road is like a cradle, let me begin to meditate: in one part of the deep mountain, there is a gem mine, the mine mouth is a big pit, the miners are crawling in along the mine hole, and a piece of ore is mined. Some experts stared at each other, and saw the good ore of the good quality put it on, waiting for further screening; the stone with bad appearance was thrown aside... Maybe we can bring back two gems!

 
天然缅甸鸽血红红宝石

The natural Burmese pigeon blood red ruby ​​is the benefit of not going to the expert first and choosing to go straight into the mountain - it can give birth to many imaginations, which adds a lot of unknown fun to this trip.

However, things are often "thinking beautifully", but this is not the case.

Finding the Dabie Mountain Ruby is not easy

"The Dabie Mountain ruby ​​grows in the biotite two long gneiss. It is the trapping body in some ultra-magnesium iron small rock masses." Mr. Wang Shiian introduced. Mr. Wang is a famous jade collector in Anhui. He is known as "Hetian Wang" and "one eye". He graduated from the Changchun Institute of Geology in the early stage of seismic geology and structural geology, and has a special chance with the Dabie Mountain Ruby.

Poor us, these bodies, naturally feel the strangeness of the geological nouns such as "black mica two long gneiss" and "super magnesium iron small rock body". In the face of my doubts, Mr. Wang said with a smile: "I don't know what to see, or see the stone and talk again!" The car drove into the floodwaters of Huoshan, and the speed slowed down. The mountain road was full of bare rocks. Wang Shiian began to look around. . "Is this gneiss?" "No, this is called mixed granite. As long as you find gneiss, you are one step closer to the Dabie Mountain Ruby."

In the mountains, all the sights are dangerous peaks, streams, waterfalls. The yearning is to watch the sunrise and see the clouds. The so-called "seeing the mountains and not the mountains, watching the trees and non-trees" often finds the feeling and pursues the metaphysical Something rarely explores the secrets hidden in a tree or a stone. Nowadays, following the experts of the mines, I have experienced the fun here.

"You see, it's an eye-shaped mixed granite, and the eyeball contains feldspar. These mixed granites are white in black and have long lines. If they are shipped to the city, they can be carved into strange stones, which are very beautiful." The peasants placed on the side of the courtyard are called conglomerates. These are pieces of large and small stones. During the deposition process, they change into a new rock because of changes in the surrounding environment.

We stared at the various stones, and from time to time we hammered and beat them with hammers, attracting many passers-by to stop. A farmer in the distance shouted: "What are they doing?" Someone replied loudly: "Look for a stone!"

I finally saw gneiss. Just on the side of the road, the fence of the farmer's pig pen is all layered. The color is grayish black, and the shape is a bit like the "focus cut" made by the black sesame that we often eat. The hand touches it, there are obvious particles, and the texture is not as fine as the granite.

Unfortunately, in this gneiss, no shadow of ruby ​​was found. "Gneiss is a metamorphic rock, which is divided into many types, such as aluminum-rich gneiss, slant gneiss, alkali long (two long) gneiss and calcareous gneiss. Dabie mountain rubies are produced in biotite. Two long pieces of gneiss."

It was getting late, we had to find a place to live in the Manshuihe Town. I heard that there was a large quarry nearby and decided to visit it the next morning.

At this point, I realized that the original Dabie Mountain ruby ​​does not have a special mine pit, but it is a very scattered "chicken-like" distribution, and the scale and the amount of minerals are very small, usually a litter of a few hundred kilograms to a ton or so. . In the 1970s and 1980s, when the geological department explored the area, it discovered rubies at several detection points, but it was quickly dug. At that time, the geological team members were working in the wilderness. Now they want to find the geological point where rubies were found decades ago. Without the guidance of the old geological team members, the search difficulty will be very large, just like "the needles in the mountains."

When I heard this, my mood became a bit frustrating. Do we have to return without success?

Disappointing Manshui River

大别山

Dabie Mountain Manshui River

 

The Manshui River is located in the southwest of Huoshan County, 58 kilometers away from the county seat, adjacent to Dahuaping and Luoerling in the east, and Jinzhai County in the north. A bus with the word "Yingshan" passes through the town. Going northwest along the provincial road is the boundary of Hubei.

 

a basin of cold water

 

It seems that the location of the Manshui River is in line with the information we learned earlier, that is, "Huoshan A, B, Jinzhai W River, Erdaohe, Hubei Yingshan", the general orientation is correct. But if you can find rubies, it depends on luck.

 

The town is not very big. Like all the small towns in the mountains, you can see the whole picture in one street. Manshui River is the famous medicine lily, sericulture, organic tea and bamboo base in Huoshan. Now is the season of lily harvest. Many of the street-facing facades are piled with piles of dried or half a thousand lilies. The fine dried lily core is only 8 yuan a pound, which is very cheap. Some people take the dried silkworms out of the sun, which is medicinal. There are also yellow essence and jujube skin. The resources of Chinese herbal medicines here are very rich, such as Tianma, Ganoderma Lucidum, Poria, Eucommia, etc., are very famous.

 

We inquired on the street and asked about the quarry. Just happened to meet an enthusiastic person named Wang Guoshu, who is the old mayor of Manshuihe Town. He said to us: "The Longmen quarry that you inquired is made of granite and iron ore, without the kind of stone you are looking for."

 

After listening to this, it seems like a pot of cold water splashing down, disappointing!

 

Folk collector

 

However, Mr. Wang then pointed out the maze: "The old man named Jiang Xianhua lived on the street. After retiring from the Broadcast Culture Station, he liked the stone. Every day he went to the river to go to the rock. He might understand the situation. "

 

The enthusiastic Wang Mayor took us to the family who loved the stone, and Jiang Xianhua was at home. Sure enough, the old man’s house is filled with stones of various shapes and different materials, such as yellow wax stone and ash stone, which has the shape of a mountain stream, and some stones that are not very famous but very beautiful. ......

 

However, I rummaged through the stones, but there was no Dabie Ruby we were looking for. Wang Shinian took out the ruby ​​ore sample he carried with him to Jiang Xianhua. Jiang took a handful of hands in the hands for a long time and said: "I have traveled dozens of miles along the river. I have never seen such a long red dot inside. I used to hear it, but now No more."

 

Manshui River without ruby

 

The affirmative tone of the old man completely blocked my expectations for the Manshui River.

 

However, he decided to take us to the river to have a look. After more than an hour of searching, I found a few beautiful patterned stones worthy of playing in the floodwaters. We took it to the car and prepared to bring it back to Hefei.

 

Mr. Wang Shinian comforted us: "In fact, treasure hunt is only a process. The Dabie Mountains are all treasures everywhere. These are ordinary stones. Simply embellish them and put them in the city, they can also become valuable ornaments."

 

Perhaps this is also a harvest we have in the Manshui River.

 

Cold-faced ruby

 

Going back to the feathers, consulting geological experts

 

The road of treasure hunt is long, and after returning from the Huoshan Manshui River, we have to find another way out. This time, we decided to visit the geologist first.

 

Discovered Sun Xianru, one of the geological members of the Dabie Mountain Ruby

带包体的大别山红宝石.jpg

Dabie Mountain Ruby with Inclusions In the 1980s, the earliest discovery of the Dabie Mountain Ruby was the Anhui Sany 3 Geological Team, which is now based in Lu'an City. However, when we visited, some of the main insiders in the geological team were not in the unit, and some went to the buried hill to investigate the mine. It would take two days to come back. After several twists and turns, I finally found out an old geological team member named Sun Xianru. He was the first national quality jewel jade quality inspector in Anhui Province. He was also one of the geological members who discovered the Dabie Mountain ruby.

After Sun Xiru retired from the Provincial Institute of Geological Experiments and lived in Hefei, we had to return to Hefei.

Sun Xianru graduated from the Department of Geology of Peking University in 1964, and was assigned to the Guangxi Geological Department. In 1970, he was transferred to the Third Third Geological Team of Anhui Province.

Occasionally discovered Dabie Mountain Ruby during exploration of chromite ore

"At that time, the Sany 3 Geological Team was stationed in Foziling, Huoshan County. Nowadays, people often say that the discovery time of the Dabie Mountain Ruby was in the early 1980s. In fact, it was accurately in the 70s. Since the 1970s, the geological department has been in the country. Within the scope of the search for a 'chromite' campaign, using human-sea tactics to conduct prospecting in every possible place, Dabie Mountain was a key location for prospecting at the time."

When it comes to chromite, it may be difficult for ordinary people to understand why it takes so much effort to find such things. Because of the main source of chromite or metal chromium, chromium is one of the important strategic materials. It is an indispensable material for aerospace, aerospace, automotive, shipbuilding, and defense industries for the production of guns, missiles, rockets, and ships. The chromite ore is precisely the shortage of minerals in China, with low reserves and low production. At that time, most of the ore was imported from Albania.

"So our geological team sent one after another squad to look for it in the mountains. Everyone carried a geological bag made of canvas, which contained a hammer, a magnifying glass, a compass, a map, a specimen bag, and entered the depths of the mountain. Military maps are drawn according to the scale. Each team is tested according to a certain route and distance. Each point must describe the rock condition, record, sampling, and then analyze the retrieved specimens. The Dabie Mountain Ruby is what we are looking for. Accidentally discovered during the process of chromite."

Due to the cold environment of the Dabie Mountains in the past year

Around 1972, a geological team member of another detachment first discovered a corundum-containing ore near the high dam. Who is already difficult to verify, and later Sun Xianru discovered the mineral in Gongjiawan. "We brought back the collected specimens for chemical analysis and identification. We know that this is a corundum gemstone, also known as a ruby. However, no one cares at the time, only when a mineral is discovered, no one Think of it as one thing."

"This is a very precious gem! Why not be the same thing?"

"One of the things we are looking for is chromite, and then it was at the end of the 'Cultural Revolution'. The society still does not love the red dress. The decorative gems are naturally not valued. Whoever loves it will be criticized. For the 'bourgeois sentiment'.

In this way, although the Dabie Mountain ruby ​​was discovered, it was left in a corner.

Until 1976, a deputy chief engineer of the Anhui Provincial Bureau of Geology and Minerals went to Beijing to meet. I saw red fused alumina in the ore specimens of the exhibition. I remembered that we also had such things in the Dabie Mountains, so I reported the matter to the Ministry. "Later, it may be that under his report and suggestion, Anhui Province began to conduct a survey and excavation of the corundum mine in the Dabie Mountains. This red corundum was identified as a ruby ​​by the gemological laboratory of the Ministry of Geology and Minerals and can be ground into a dome. Jewelry gemstones. In the early 1980s, the news was published in the China Geology and Minerals News. This is the discovery of the ruby ​​of the Dabie Mountains."

Magical Dabie Mountain

So why does the Dabie Mountain produce rubies?

Let's not talk about gems first, let's start with the geological form of the Dabie Mountains.

Geological form of the Dabie Mountains

For the location of Anhui Province, Dabie Mountain is the oldest land in the region. More than two billion years ago, the land of Anhui was a sea of ​​oceans. There were no birds flying, no fish jumping. What you can see was thunder and lightning, storms and storms. Submarine volcanic eruptions frequently, after hundreds of millions of years, eruption and sedimentation formed the Dabie ancient land nucleus. In the middle and late Proterozoic, between 1.4 and 800 million years ago, another round of crustal subsidence formed the original Dabie Mountain base.

At first, the Dabie Mountains were in an east-west narrow trough. The sides of the trough were the Guhua North plate and the Guhuanan (Yangtze) plate. The two major plates in South China and North China have experienced more than one billion years of rifting. In the early 1980s, the two major plates began to gather together. They collide like two large ships, one of which is inserted under the other. The Dabie Mountains were created in this violent plate collision.

世界最大的红宝石:卡门露西亚

The world's largest ruby: The Carmen Lucia Dabie Orogenic Movement, with the squeezing of the mountain and river, bulges the original sedimentary layers into high mountains, which are metamorphosed into metamorphic rocks under long-term high temperature and high pressure. The ancient metamorphic rocks are rich in minerals. More than 70% of the world's iron ore is produced from metamorphic rocks, and the most gold produced in South Africa is extracted from metamorphic conglomerates. In the Dabie Mountains, there are large areas of metamorphic rocks in the Archean and Proterozoic periods. The common metamorphic rocks in this area are schist, gneiss, phyllite, slate, shale, and marble. The ruby ​​we are looking for is born in these metamorphic rocks.

On the earth where people live, the chemical composition of aluminum oxide (Al2O3) in the earth's crust is second only to silica (SiO2), but the corundum deposits of crystalline minerals with Al2O3 in nature are relatively rare.

The Dabie Mountain red corundum mine is located in the northern part of the mountains. The exposed strata in this area is an ancient metamorphic rock series that has undergone intense mixed lithology. It belongs to the Dabie Mountains in the Archean period (3.8-2.6 billion years ago). "The Dabieshan red corundum minerals are in the Taiyun Dabie Mountains group, the Heiyun hornbeam slanting gneiss and the ultrabasic rocks. The corundum biotite two long gneiss protoliths are the Archean aluminous argillaceous rocks in the metamorphic green schist facies. Under the formation of biotite, muscovite, plagioclase, quartz schist, after desiliconization in the amphibolite facies, the muscovite is decomposed into potassium feldspar, corundum and H2O,"

The words that the experts said are somewhat difficult to understand. To put it simply, the Dabie Mountain ruby ​​is in the long geological time. Under high temperature conditions, the "rich aluminum" and "thin silicon" rocks undergo desiliconization reaction and decompose the corundum.

This is the magical power of nature, constantly arranging and combining various substances to form new substances.

Under normal temperature conditions, corundum-containing rocks are weathered and transported, sorted and enriched to form corundum sand. The changes in nature are very long, ranging from tens of thousands of years to millions of years or even billions of years. The changes in this process are complicated. The gem crystals originally formed may be destroyed in whole or in part by geological effects such as earthquakes. It may also react with later chemical solutions to form new minerals (not necessarily gemstones), thus retaining The minerals that can be found today as gemstones are rare.

Among them, the highest quality rubies produced are even rarer, accounting for only 0.1%. This is mainly because ruby ​​crystals have many defects such as cracks, inclusions, spots, etc. The so-called "ten red nine cracks", ruby ​​without a little crack and flaws is extremely rare. In order to discover and discover these gems on the earth, in addition to luck, it takes a lot of labor to carry out long and arduous work.

Revisit Dabie Mountain Ruby

Sun Xianru said: "The Dabie Mountain rubies that have been found in several detection points are not large in size and have been dug up. Now it is very unlikely to find the exposed mine face in the mountains. In Gaoshan, Gongjialing and Jinzhai of Huoshan The West River has, but the quality is different. The ruby ​​in the high dam has the largest content of chrome, which is rose red; the crystal of Gongjialing is larger and pink; the color of the Jinzhai River is even lighter."

In this way, the quality of the ruby ​​of the high dam is optimal. So where is the high dam?

Dabie Mountain high dam ruby ​​quality is the best

"From the Huoshan Lu Tu Shipu to Dahuaping, you should be able to find out on that road."

非洲星光红宝石

African Star Ruby has been expertly pointed, and this time I will go back and look for it, and it will not fail.

The legend of "Deer Tushi" in Huoshan County

The Lutu Stone Shop in the southwest of Huoshan County is an old village town, belonging to Luoerling Town. Legend has it that a long time ago, a group of deer came here. After eating the grass on the mountain, they vomited a lot of black sesame-like things. They turned into hard rock by the wind and the sun, and the locals called it "deer spit." stone". Then, is this kind of "deer and vomit" that the local people say is the second long gneiss of biotite?

I think it is very possible. Because the gneiss on both sides of the mountain road will increase as soon as the person enters the deer.

We did not stop at this small market town, but drove a narrower mountain road and headed for Dahuaping.

The car hovers over a high slope. This is a place on the map where no name can be found. I heard in the small market town in front that there is a peasant here. Many years ago, I used a lot of stones with red crystals. Because I didn't know the goods, I was cheated by a passing Nanjing. Perhaps the stone mentioned in the rumor is the Dabie Ruby we want?

We jumped out of the car and there were two small shops next to it, but there were only a few households. There was a young man on the side of the road. We showed him the ruby ​​mineral. He just got his hand and called: "Red corundum! This is red corundum!"

This shouting shocked us: I finally met the goods!

The young man named Wan Zhengfeng, he enthusiastically introduced to us: "The red corundum was discovered in the early 1980s. At that time, I was still young. The adults could pick up this stone when they were working. In the village. The old nine smashed a few sacks, and they were all cheated by foreigners. No money was given."

It seems that the rumors heard before have something to do.

Wan Zhengfeng took us to the place where red fused alumina was found. There is a pile of residual bare ore, and on a large slope, there are two long gneiss of biotite. "We are all such stones here. These stones are soft and soft. If you want to build things at home, you have to pull stones from other places.

Wang Shinian took out a hammer to knock the stones, and the stones were easily spread out. "The gneiss here is very weathered and softer than the gneiss of the Manshui River. If you find rubies, it should be relatively easy to remove."

王世年拿出锤子去敲这些石头,石头果然很容易就散开了

Wang Shinian took out the hammer to knock the stones, and the stone was easy to spread. Unfortunately, we found a few rounds on the stone slope and did not find a ruby ​​shadow. Wan Zhengfeng said: "The place has long been lighted up, but the old man said that there is a red corundum nugget about one meter in diameter in the culvert below the roadbed. Because the road workers don't understand it, they build it. Inside. After the road is completed, it will not be taken out.

Everyone felt very sorry. Jumping into the culvert and looking for a long time with a small flashlight, naturally there is no gain.

"Is there a farmer's house nearby?" "Yes, there is another piece in the old nine home."

The old nine surnamed Wu, just opened a small shop on the side of the road, his wife at home. When we asked about red fused alumina, she just smiled and said that there was a piece, but it was not shown to us. We sat there and waited for a while, and someone came back on a big motorcycle, it was Wu Laojiu. We asked again to look at the red fused alumina. Wu Laojiu agreed, and Wu’s wife walked into the house with a smile and took the ore from the bedside table. The stone is about the size of the palm of the hand, and the red gems of the stars are set in the stone, like a peeling large pomegranate. The crystal of the corundum is rosy red, very dazzling. Wang Shi-nian put the stone in his hand and looked at it while he nodded slightly. "The color is good! The corundum crystal is big, the color is also very good, and it can be processed into a gemstone ring."

I quietly asked: "Value geometry?

Wang Shinian smiled and said: "It is necessary to open it to know that corundum crystals like this should have a lot of cracks."

After listening to this, someone asked Wu Laoji: "Do you sell this stone?"

Wu Laojiu did not answer, just waved his hand. His wife smiled and said: "Play at home, don't sell."

In this case, we had to go home. Although I returned empty-handed, at least I saw a real gem in the Dabie Mountains, and it is worthwhile.

Question: Why didn't anyone come to Dabie Mountain to mine rubies?

When you see this, you must be in doubt, just like the question we had when we started to visit the Dabie Mountain Ruby. That is: the Dabie Mountain Ruby has been discovered for decades, if it is just beginning to be cold, there are reasons for the times, but why For a long time, it has been "hidden in the depths of people do not know"?

In fact, in the "treasures" of the Dabie Mountains, not only rubies, but also blue corundum, also known as sapphire, is not valued. As early as the early 1990s, Anhui Institute of Geological Sciences conducted a survey of gem resources. In the study, blue corundum was found in the northern part of the Dabie Mountains. The corundum was light blue and blue, hexagonal columnar, translucent, and attached to the corundum of the corundum.

星光红宝石

Starlight Ruby Dabie Mountain Ruby Why Unmanned

In the world, the production of rubies is very small, mainly distributed in Myanmar, Thailand and other places. Since the Dabie Mountains have long found rubies and sapphire mines, why are they not exploited?

Dabie Mountain Ruby Mining Difficulties

Treasures are there, of course, some people want to explore. Since the discovery of the Dabie Mountain gemstones, gemologists and enthusiasts from all over the world have been visiting, hoping to develop it and use it. However, most of them are full of hope, but they are disappointed and gradually lack of interest. The reason is closely related to the formation conditions around the Dabie Mountain gem and its own quality. To make a simple analogy, the Dabie Mountain gem "was born bad", it grows in hard rock and it is very difficult to take it out of the stone. The ruby ​​inclusions in Myanmar and Thailand are sand minerals, which are easily stripped out. Everyone saw on the TV that Burmese workers stood in the water to wash the ore and picked the gems. The ruby ​​inclusions in the Dabie Mountains are rocks. In order to take out the ruby ​​one by one, the technical difficulty is extremely great, and the production cost brought about by this is also very large.

The color of the ruby ​​in the Dabie Mountains is not strong enough to be too far from the top ruby.

The red color of ruby ​​comes from the chrome contained. The chrome attracts the blue and green spectrum, which is refracted into red. Therefore, the color of ruby ​​is closely related to the content of chromium. The higher the content, the more red. Prof. Sun Xianru, a national jewellery jade appraiser, found that the chrome content of rubies produced in Myanmar is generally between 1.81 and 0.94, while the chromium content of Dabie Mountain gems is only between 0.29 and 0.05. From here, the huge difference between the two can be seen. The top quality ruby ​​is pure in color and has good saturation. It does not have any secondary color of brown or blue. Its color intensity is like burning coke, red is like "pigeon blood"; the most intense color of Dabie Mountain ruby ​​is only rose red. Compared with the top ruby, the gap is larger.

Dabie Mountain Ruby has more cracks due to geological reasons

Furthermore, the geology of the Dabie Mountains is complex and special. Due to the continuous multi-period continuous structural compression, the Dabie Mountains red corundum crystals have more cracks. "If it's just a matter of color and impurities, there are solutions. For example, using heat treatment, the corundum crystals are burned in a high temperature furnace to remove the impurities and increase the transparency. It is also possible to add elements to make the non-gem grade. The color of corundum has become a gem grade. Although it is not comparable to the natural gemstone, it has a large market value. However, if there are many cracks, there is no way to deal with it. Professor Luo Jingdi of Xi'an Jiaotong University has taken several samples. I tried to make a change, but the effect was not ideal."

 
 
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