18k Gold Is an Alloy with at Least 75% Gold, Ie 18/24 Gold, and 25% Other Precious Metals, Including Platinum, Nickel, Silver, Palladium, Etc. 18k Gold Is a Kind of Gold Ornament with Lower Cost and More Comfortable Wear.

The Calculation Method of Gold Is to Divide Pure Gold into 24 Parts, 24k Gold Is Pure Gold, but It Is Impossible to Have 100% Gold in Reality, So the Gold Content of 99.9% And above the United States Can Be Called 24k Gold.