Modern jewelry colorful, dazzling.
Jewelry classification of a lot of standards, but the most important thing is by material, process means, use, decorative parts, etc. to divide.
Classification by material：
(i) Metal class
A, Gold: Gold (24K), 22K, 18K, 14K, 10K, 9K, 8K;
B, Platinum: PT999, PT990, PT950, PT900, PT850, PT750;
C, Silver: Sterling silver, gilt silver (925).
D, iron (more for stainless steel);
E, nickel alloy;
F, common metal copper and its alloys;
G, Al-Mg alloy, tin alloy.
(ii) Non-metallic categories:
1.Leather, rope, silk silk category;
2.plastic, rubber category;
3.Non-metallic, animal skeleton (ivory, ox horn, bone, etc.), Shell class;
4.Wood (aloes, Rosewood, Zaomu, gamma, etc.), Plant fruit Nuclear category (mountain Core, peach core, coconut shell, etc.);
5.Gem and various types of color stone:
A, high-grade gem Category: such as diamonds, emeralds, red Sapphire, emerald, cat's eye, pearls and so on;
B, mid-range gem Category: Aquamarine, tourmaline, Dan Quan Stone, natural zircon, spar, etc.
C, low-grade gem Category: Garnet, topaz, crystal, olive stone, lapis lazuli, turquoise and so on. 6. Glass, Ceramics Category: such as cloisonne, coloured glaze and so on.