2ct Blue Diamond Stud Earrings in 14k White Gold. Blue Diamond Stud Earrings Secure Friction Backs 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.