A Secret Weapon For engagement ring
鑽石分為一型和二型兩種,這主要是根據它是否含有N元素:一型含;二型不含。而藍色的鑽石是二B型的,是半導體。Coloured diamonds have impurities or structural defects that trigger the coloration, even though pure or practically pure diamonds are transparent and colorless. Most diamond impurities switch a