18 Years Factory Emerald Birthstone - Natural Black Sapphire Heart Loose Stone 7x7mm – Datianshanbian

Product Detail:

The color changing Sapphire in Corundum is real, it will appear different colors in different light, also known as color changing corundum or color treasure, the color change is expected to be caused by the chrome element in corundum. It will be grey-blue or violet in sunlight, purple or Magenta in yellow light, bright colors are the best, but unfortunately they generally appear dark, of course, bright colors are also available, the greater the color difference, the more expensive, also known in some quarters as Alexandre corundum.

At present, Domestic Sapphire is divided into Sapphire and Black Sapphire, Sapphire is that we usually see good permeability of Sapphire, mainly inlaid in gold, platinum and other precious metals above. And Black Sapphire is a new term recently put forward by Shandong Shuolan Gemstone Company, which now controls 75% of China’s black sapphire market. Black Sapphire is actually like a low-grade Sapphire, characterized by black and poor permeability, the most attractive is his price, like an AA 4X6 egg-shaped Black Sapphire only 2 yuan, the price is extremely attractive, so many domestic and foreign silver ornaments manufacturers began to purchase a large number of such Sapphire, to develop new competitive products, the price is not high but can enhance the value of their own products, our company is to purchase such Sapphire to compete in the market, and achieved good.