Single Round Black Diamond Stud Earring in Sterling Silver .25ct Set In Sterling Silver The Black Diamond Is 1/4 Carat This Is A Single Black Diamond Earring 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.