Detailed Notes on 求婚戒指
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。Showcase your promise of endlessly with among our popular designer kinds. These engagement rings for Ladies element handcrafted particulars and eternal high-quality.Impurities in pure diamonds ar