Gemstone News Center

HPHT diamond method simulates the physical conditions under which natural diamonds grow. Therefore, man-made diamonds in theory are more close to natural diamonds. For technical development derives early from the West, diamonds created by this method was given the Chinese names “合成钻石” or “实验室钻石”,   Read More>

First of all, we know that a diamond has one unique feature -- its hardness. Diamonds have a Mohs hardness of 10, while zircon has a Mohs hardness of 6-7. Therefore, we can use their hardness differences to distinguish . Find a gem with a hardness in the middle of them and scratch it on the diam   Read More>