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sterling silver concave discs wholesale jewelry making 1. TSL: Xie Ruilin's English name
2, 750: 18K gold, the gold content is 75%

produced in Italy, Italy
K is Karat abbreviation, which is used internationally to represent the gold content content content content content content content content symbol.
k gold basically three colors (yellow, silver white, pink rose color) 24K gold: Golden purity 999 (99.9%) or more, called pure gold, foot gold, real gold, 999 gold.
22K gold: 24K gold (91.7%) three yuan alloy (8.3%) of the alloy (8.3%) of silver and copper, yellow.
18k gold: 24K gold (75%) three yuan alloy (25%) alloy (25%) of silver and copper, yellow.
18k gold: 24K gold (75%) copper (25%) binary alloy with redness.
18k gold: 24K gold (75%) silver (6%) copper (19%) triple alloy with pink.
18k white K gold (white 18K gold): The three yuan alloy of the pure gold is (75%) silver (10%) 钯 (15%), silver white. 14K white K gold (white 14K gold): The three yuan alloys of the pure gold (58.5%) silver and cricket (41.5%), silver -white.
14k gold: pure gold (58.5%) alloy of silver and copper (41.5%) three yuan alloy, yellow.
12k gold: three yuan alloy of pure gold (50%) silver and copper (50%), yellow.
10k gold: Pure gold (41.7%) alloy of silver and copper is a ternary alloy (58.3%), yellow.
9k gold: Pure gold (37.5%) silver and copper alloy is a three -yuan alloy (62.5%), yellow.
Gold (AU): Yellow precious metal, pure gold 999 is generally called 24K, and the texture is soft and rich.
k gold-bright yellow precious metal alloys, because the gold quality is not easy to become exquisite jewelry, consisting of gold (AU), silver (AG), copper (CU) and other deployment, which is used for high-end jewelry inlaid alloy alloys Dividing the level with gold content. The gold content of 750 is called 18K, 585 is called 14K, 500 is called 12K, 417 is called 10K, and 333 is called 8K. White K gold (WG): The white alloy developed by the white gold, and the white alloy combined by the blend of 钯 (PD), silver (AG) such as gold (AU) is similar to that of Platinum. It is not easy to judge, and often mistakenly think of platinum, but there is a significant gap between the texture and weight. Platinum is higher than white K gold in terms of texture density and product value, but white K gold has the advantage of low price. Platinum (PT): PT1000: Platinum is 1000, platinum.
PT950: Platinum is 95%, 钯 5%binary alloy.
PT900: Platinum is 90%, 钯 10%of binary alloys.
PT850: Platinum is 85%, 钯 and copper 15%three yuan alloys.
Platinum (PT) generally refers to Platinum:
The two -dollar alloy of 95% 5%precious metal. But these titles are unreasonable and easily confused with white K gold. Its symbol is PT, silver gray -white, a gravity of 21.35, a melting point of 1700 ° C, and a Mohs hardness of 4 -4.5 degrees. It is chemical and stable. Pure platinum is relatively soft, adding metals such as 钌, 铑, and 钯 in the decoration of gold will increase its hardness

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