18k white gold is made of 75% pure gold and is closer ... and fewer shops are willing to buy it back. White gold is an alloy of pure gold combined with other metals like silver, nickel, palladium ...

You can also find the current gold price in Jordan for different charts of 24k, 22k, 21k, and 18k of gold ... Manufacturers generally alloy or mix less pure gold with harder metals like Silver ...