18k gold is an alloy with at least 75% gold content and the remaining 25% is other precious metals, including platinum, nickel, silver, palladium, etc. Carat (K) is a unit of gold content, K gold is calculated by dividing pure gold into 24 parts, 24 carat gold is full gold.
Two, 18k gold maintenance methods
18k gold has higher hardness, better pressure resistance, lower cost and more comfortable to wear, and is often used in jewelry design. The maintenance methods of 18k gold jewelry are as follows:
3. If the 18K gold jewelry after wearing loses its luster due to stains and dust, just place it in a neutral mild soap or detergent diluted with warm water, soak it slightly to wash with a soft brush, and wipe it dry with a soft cloth;
4, regular return to the gold store maintenance. Check whether the card lock or inlay part is loose;