Category: jewelry watch gold and silver

Question:
heard that 12K is pure gold containing 50%, which is how calculated?

Answer:
One of the characteristics of gold is soft, so when when the mosaic stones off as easily strong enough. Therefore, it was added in gold silver, copper, zinc, gold and other metals to increase strength and toughness, which made of gold, also known as K gold. In almost all jewelry inlaid in the number of different K to K gold inlaid precious stones. This will not only achieve the gold noble, but also make up for its deficiencies, and can be formulated into a variety of colors as needed, K gold is the most commonly used jewelry and change the most abundant material. number and

K gold content of the relationship: Au wt% = K / 24 × 100%

national standard GB11887-89 states that every K gold content of 4.166%, the purity of the following areas:

K gold purity of 1000 scores of minimum _ xxx_1_br>

8K 333

9K 375

10K 417

12K 500

14K 585

18K 750

20K 833

21K 875

22K 916

Note: 24 for the theory of the purity of their gold content of 100…