Tanzanite is a world-recognized sapphire-like stone. This gemstone was first discovered in the Arusha region at the foot of the equatorial snow-capped mountains in 1967. It was named Tanzanite Blue in commemoration of the then newly established United Republic of Tanzania. So, follow the editor to learn more about birthstones and Tanzanite!
You may be interested》》Where is tanzanite produced?
Tanzanite Tanzanite is also called tanzanite. I originally went to Tanzania to find precious gemstones, but later I didn’t find it, but I accidentally discovered tanzanite. Later, it was vigorously promoted by the American company Tiffany (Tiffiny). This gemstone gradually became famous. The reason why it was named tanzanite is because this gemstone is like the dusk sky in Tanzania. It is dark blue with purple in color and has strong pleochroism.
However, the hardness of the gemstone itself is 6.5 degrees on the Mohs scale, and because Tanzania has been in a civil war for a long time, it is very poor. The mining of gemstones is not easy, the output is scarce, and the crystallized particles Not big, so generally speaking, the probability of being able to buy more than 3 to 5 carats is not high, so the price remains high.
Introduction Tanzanite is a world-recognized sapphire-like stone. This gemstone was first discovered in the Arusha region at the foot of the equatorial snow-capped mountains in 1967. In commemoration of the then newly established United Republic of Tanzania, it was named Tanzanite.
China’s gemstone industry commented on it as follows: "Tanzania, gem-grade zoisite, is a silicate containing calcium and aluminum, with the chemical formula Ca2Al3Si3O12 (OH). It is not heated The treated zoisite is light reddish purple, light yellowish green and blue, and the heat treated zoisite is purple indigo blue with a hardness of 6-7, a density of 3.35g/cm3, and a refractive index of 1.690-1. . 705, birefringence 0.009. The similarity between zoisite and sapphire is the color of indigo. The difference is that the indigo blue of zoisite is bright and uniform, with no color bands or growth lines; the pleochroism is obvious. It has three colors of purple, green and blue when viewed from different directions. In a certain direction, you can see the purple-red color. It has low hardness and can be carved with a file. Zoisite is the latest gemstone variety that is loved by people for its beautiful color. .
In fact, only top-grade and A-grade tanzanite blue have all the characteristics mentioned above. Grade B tanzanite blue is dark purple and shows less color change, and grade C is lavender. From different angles, only the shades of color are different. However, the various levels of tanzanite blue are the same in terms of crystal clarity, purity and refractive index.
And as a finished product, even if it has color characteristics, The material, cutting and polishing do not meet the requirements, and it is impossible to have the corresponding grade. In the past, China's domestic jewelry industry called "TANZANITE" Tanzanite, mainly focusing on its difference with sapphire. Now it is called Tanzanite blue. The difference of one word emphasizes its similarity with sapphire.
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