The highest purity is 999, called thousands of silver, silver content is 99.9%, it is easy to oxidize and black, need to be carefully worn
The second purity is 990, called full silver, ~와 함께 90% 은.
999 그리고 990 are suitable for plain silver jewelry because of their high silver content and softness.
The most common is 925 은, called international standard silver, which is internationally recognized as the minimum standard for sterling silver.
925 silver adds 7.5% copper alloy composition, which increases hardness and is more suitable for flower jewelry. The finished silverware is usually electroplated and polished, so it has stronger anti-oxidation ability than 999 그리고 990, but the silverware needs maintenance, and it can’t be worn regardless of
s is the mark of silver. The jewelry must have the mark of s999, s990, s925 or thousands of silver and pure silver.
Sending old people and children usually use 999 그리고 990. If young people pursue fashion and look good, it is more suitable for 925.
Usually wear as much as possible to avoid contact with detergent preparations, 그게, do not wear when washing hands, bathing, washing clothes, washing dishes, 등.
Also try to avoid touching hard objects, because silver ornaments are easy to scratch
Yellowing and no luster can be wiped with a soft cloth dipped in toothpaste, then washed with water to dry, or you can use silver cloth, but do not use silver, which is corrosive silver. Note that the toothpaste should be chosen to be transparent gel-like, and must not be worn with frosted particles to avoid scratching the silver.