This kind of beauty is either colorful, 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 with few defects can be polished into precious diamonds, while those with poor transparency, many defects and black color can only be used as industrial raw materials.

2, long, that is, the texture is hard and wear-resistant, and it can last for a long time.

Because of its high value, people must expect it to be durable, valuable and even heritable.

3, thin, that is, less output.

Extended data:

Jewelry classification:

1. Jewelry is divided into natural jewelry and jade (natural gemstones, natural jade and natural organic gemstones) and artificial products (artificial gem, recycled gemstones, assembled gemstones and synthetic gemstones).

2. Natural gems: 65,438+07 kinds of diamonds, rubies, sapphires, golden-green cat's eyes, beryl, emeralds, tourmalines, opals, chalcedony and Herbert.

3. Natural jade: Huang Longyu, agate, jasper, Lingbi jade, Hetian jade, blue and white jade, xiuyan jade, Nanyang jade, chalcedony, serpentine, jade, jade, lantian jade, malachite, turquoise, Dongling jade, white marble, Junggar jade, luminous jade, malachite, cryolite, lapis lazuli, jade, etc.

4. Natural colored stones: Shoushan stone, Tian Huangshi, Qingtian stone, bloodstone, Wuhua stone, Changbai stone, Duanshi, Shitao, Songhua stone, Yuhua stone, Bahrain stone, Helan stone, Chrysanthemum stone, Ziyun stone, bluestone, Yanzishi Fossil fossil, Mangshi, Hongsi stone, Taihu stone and feldspar stone.

5. Natural organic gems: amber, pearl, coral, ivory and coal jade.

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