Top Guidelines Of 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。Applying probes for example polarized light, photoluminescence, and cathodoluminescence, a number of expansion zones might be identified in diamonds. The characteristic sample in diamonds through