Ideal Degree of Jewelry

Gold Degree
Unit value is the carat. Carat is the smallest unit of weight in trading of noble metals and precious stone. Pure gold is have a degree 24 carat and is usually stored in the form gold ingot. 1 gram is a 5 carat, but after a jewelry, gold always tag with for example 10 grams of 18 carat.
In the world's of jewelry gold is often sold with a degree 9 carat, 16 carat, 18 carat and 22 carat. In Indonesia generally, 18K and 22k. K shows the stamp or seal on the gold jewelry which shows gold degree concerned.

For example ...
18K gold means that you buy gold jewelry from the trade value has 75% of 24 carat. Or 18:24 × 100% = 75% in world trade or between traders is often referred to as 750. Usually traders use 3 digits behind the comma. What difference, if only 0.055 grams with price Rp.240,000/gram, I have more or less the same as the cost pairs 1 jewel. This means that there is a 18K gold in the 25% mixture of others, this mix is called alloy. Alloy is usually a mixture of pure brass, pure copper, pure silver, pure zinc and a mixture of other appropriate secret each factory that produce.

Silver Degree
Silver jewelry in the world of trade often to give stamp 925. There is another that is 800 and usually without a background K in the end 925. The numbers of 925 shows 92.5% of 100% pure content. Usually, pure silver is 99.99%. Not really 100%. Bahan baku biasanya disimpan dalam bentuk biji yang disebut klicir atau granulation. The Staple are usually stored in the form of seeds, who called granulation.

Why jewelry is not made pure?
If pure, silver and gold will be easy sunken and fast to scratch or dull also Less hard. The mixture make hard and shine. This is the secret of each factory though Jewelry still glossy but hard.