1/2ct Single Black Diamond Solitaire Stud Earring set in White Gold 1/2ct SINGLE Diamond Earring THIS IS ONE EARRING ONLY. Shipped in a velvet pouch. These do not match for pairs, that is why they are sold as singles. 10K white gold mounting and back Black diamonds are natural diamonds heat treated black. All of our diamond suppliers and MLG state that to the best or their/our knowledge that all of our diamonds are conflict free.