This kind of beauty is manifested in gorgeous and boring colors, or transparent and clean, or has special optical effects (such as cat's eye, discoloration, luminescence and so on). ), or have special patterns (such as chrysanthemum stone, agate, plum blossom jade, etc. For example, diamonds that are transparent and have few defects can be polished into precious diamonds, while diamonds with poor transparency, many defects and mottled and black colors can only be used as industrial raw materials.
2, long-term, that is, the texture is hard and wear-resistant, and it can last for a long time.
Because of the high value of precious stones, people must expect them to be durable, insurable, valuable and even inheritable.
3, thin, that is, less output.