1/4 Carat Round Single Black Diamond Stud Earring In 14 Karat White Gold Single 1/4 carat black diamond earring in 14K white gold great for that second or third hole. Crafted In Solid 14 Karat White Gold SuperJeweler offers free shipping in the United States, Canada, the United Kingdom, Australia and almost every country. All purchases from SuperJeweler come with The SuperJeweler Lifetime Guarantee. Your SuperJeweler jewelry purchase includes a lifetime guarantee against the loss of side stones or damage to the jewelry's setting or center stone. It also includes a one-year replacement guarantee against the loss of your jewelry's center stone.