So 18K gold is just 18K platinum. If you often come into contact with some strong acid and alkali chemicals, it is easy to change color, such as washing powder, detergent, cosmetics and so on. , or there will be different degrees of wear when rubbing with other hard objects. After the coating is worn, the true color of the metal will be exposed, showing a faint yellow-white color.
Extended data
18k gold is an alloy with a gold content of at least 75%, that is, an alloy with a gold content of 18/24, and the remaining 25% is other precious metals, including platinum, nickel, silver and palladium. 18K gold is a kind of gold ornament with low cost and comfortable wearing.
The calculation method of K gold is to divide pure gold into 24 parts, and 24k gold is pure gold, but in reality, it is impossible to have 100% gold, so China stipulates that gold with a content of more than 99.6% can be called 24K gold.
Maintenance method
1 and 18k diamond wedding rings need to be stored separately.
Diamonds are the hardest substance in nature. If the K-gold diamond ring is stored with other gems, the edges and corners of the diamond may scratch the surfaces of other metals and gem ornaments.
Other high-hardness gems may also cause scratches on the surface of K gold, which will affect the beauty of wedding rings. It is wise to store the K-gold diamond ring in a jewelry box alone, or put it in a jewelry bag and then put it with other jewelry. If there is no such box or jewelry bag, wrap the diamond ring with several layers of paper towels or thin cloth.
2. Avoid putting the K-gold diamond ring in an environment of supercooling and overheating.
Metal has the characteristics of thermal expansion and cold contraction, so when 18K gold diamond ring is placed in an environment of supercooling and overheating, K gold will be affected by temperature changes, which will lead to sudden loosening or contraction of metal and affect the firmness of diamond inlay. If this happens for a long time, the diamond may fall off, causing irreparable losses.
3. Don't wear a ring during labor activities and strenuous exercise.
Two inevitable things in labor activities and strenuous exercise are sweat, oil pollution and possible violent collision, both of which will do harm to the K-gold diamond ring. Diamonds are oleophilic and hydrophobic. If you are exposed to sweat and grease for a long time, the surface of the diamond will slowly turn yellow and lose its luster, and so will K gold.
Although diamond is the hardest gem in nature, it can't stand violent collision. In the process of sports and labor activities, violent collisions will cause damage to diamonds and gold.
4. Avoid contact with acid and alkali substances in life.
Corrosive acid and alkali substances in life will do harm to diamonds and gold, so try to avoid gold rings touching these substances. Take off the ring on your finger when washing your hands, making up and smelling perfume, and don't wear it when swimming, because salt water or chlorine water will damage the surface of the K gold ring holder.
5. Regular maintenance inspection 18K gold diamond wedding ring.
18K diamond wedding ring can't keep its original luster for a long time, so it needs regular maintenance and cleaning. You can clean the ring at home with a solution of 1 times ammonia water and 6 times water, or you can send it directly to a jewelry store for maintenance.
Always check whether the inlaid claws of the ring are intact and whether the diamonds are loose. If there is, take it off immediately and send it to the jewelry store for repair.
Baidu encyclopedia-18K gold