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Citrine varies in color from yellow to light brown and is easily confused with citrine. The yellow color in citrine is due to the presence of iron oxide in water. Natural citrine is scarce and produced in few places, with only Brazil and Madagascar producing high-quality Citrine in limited quantities. Amethyst and nicotinite are often heated to make them change color and look like citrine, or even fake citrine. Citrine has complete joints, citrine has no joints, and the lowest...
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Amethyst is a tripartite crystal system, the crystal is hexagonal columnar, the cylindrical surface is transverse, there are left shape and right shape, twin-crystal is very common. The hardness is 7. The crystal often contains irregular or winged gas-liquid inclusions. It is one of the most expensive members of the crystal family, because the water crystal contains Mn, Fe3+ and appears purple. Transparent, with obvious polychromatism observed under dichromatic mirror.
The ame...
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Amethyst is a tripartite crystal system, the crystal is hexagonal columnar, the cylindrical surface is transverse, there are left shape and right shape, twin-crystal is very common. The hardness is 7. The crystal often contains irregular or winged gas-liquid inclusions. It is one of the most expensive members of the crystal family, because the water crystal contains Mn, Fe3+ and appears purple. Transparent, with obvious polychromatism observed under dichromatic mirror.
The ame...
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Red Spinel has a ruby-like bright luxury red, it is also highly valued. She was wearing the robes of the pope of the Vatican, the Tsar of Russia, the son of Iran, and the crown of King of the British Empire. The legendary 170-carat black prince of the British crown jewels was later identified as spinel. In the 1415 Battle of the 1415 of Agincourt, in which the English king, Henry V of England, had beaten the French army several times as many as his own Battle of Agincourt, the...
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Aquamarine quality is evaluated from color, clarity, cut and weight. Pure color, no gray, no dichroism, thick and bright color of the highest value. Some aquamarine with directional inclusions can be processed into cat’s eye effect or starlight effect, and aquamarine with special optical effect is more expensive. Aquamarine with the same color, clarity and cut is more valuable if it weighs more.
Aquamarine is a beryllium, aluminum silicate, together with Wulan gemelline,...
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Ruby [1] , which means corundum of a red color, is a type of corundum and consists primarily of aluminum oxide (AL 2O 3) . The red color comes from chromium (CR) , mainly Cr2O3, the content is generally 0.1 ~ 3% , the highest is 4% . Containing Fe, Ti and blue said Sapphire, non-chromium CR color of other colors of corundum also collectively known as Sapphire.
Most natural rubies come from Asia (Burma, Thailand, Sri Lanka, Pakistan, China Xinjiang, China Yunnan, etc.) , Africa...
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Pink Sapphire reddish sapphire: earlier, the international gem community believed that only corundum with medium depth to dark red or purplish red can be called ruby. Those that turn red light to very light are called pink sapphires. However, at the third session of the International Association of colored gemstones held in Sri Lanka in May 1989, it was decided to abolish the name and include such gemstones into the scope of Ruby (but some people still disagree with this resol...
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Ruby [1] , which means corundum of a red color, is a type of corundum and consists primarily of aluminum oxide (AL 2O 3) . The red color comes from chromium (CR) , mainly Cr2O3, the content is generally 0.1 ~ 3% , the highest is 4% . Containing Fe, Ti and blue said Sapphire, non-chromium CR color of other colors of corundum also collectively known as Sapphire.
Most natural rubies come from Asia (Burma, Thailand, Sri Lanka, Pakistan, China Xinjiang, China Yunnan, etc.) , Africa...
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Garnet, called ziyawu or ziyawu in ancient China, is a group of minerals that have been used as gemstones and abrasives in the bronze age. The common garnet is red. Garnet English “garnet” comes from Latin “granatus” (grain), which may come from “Punica granatum” (pomegranate). It is a plant with red seeds, and its shape, size and color are similar to some garnet crystals.
The common garnets are classified into six types according to their c...
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Cordierite is a silicate mineral, usually light blue or light purple, glassy luster, transparent to translucent. Cordierite also has the characteristic of being remarkably polychromatic (tricolor), emitting light of different colors in different directions. Cordierite is usually cut into traditional shapes, and the most popular color is blue-purple.
Cordierite is similar in color to sapphire, so it is also called water sapphire. Nicknamed the poor man’s sapphire because ...
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Amethyst is a tripartite crystal system, the crystal is hexagonal columnar, the cylindrical surface is transverse, there are left shape and right shape, twin-crystal is very common. The hardness is 7. The crystal often contains irregular or winged gas-liquid inclusions. It is one of the most expensive members of the crystal family, because the water crystal contains Mn, Fe3+ and appears purple. Transparent, with obvious polychromatism observed under dichromatic mirror.
The ame...
Product Detail:
Amethyst is a tripartite crystal system, the crystal is hexagonal columnar, the cylindrical surface is transverse, there are left shape and right shape, twin-crystal is very common. The hardness is 7. The crystal often contains irregular or winged gas-liquid inclusions. It is one of the most expensive members of the crystal family, because the water crystal contains Mn, Fe3+ and appears purple. Transparent, with obvious polychromatism observed under dichromatic mirror.
The ame...