Sterling Silver London Blue Topaz and Blue Diamond Halo Stud Earrings (1/3cttw, I-J Color, I2-I3 Clarity) Bestowed with midnight blue charm these 8mm stud earrings featuring prong-set 4.4 cttw 8mm round london blue topaz surrounded by 1.3mm 0.3cctw round blue diamonds are a perfect pair to add instant sparkle to any look. Set in 1.9g 925 sterling silver with friction post backing, these earrings are the best gift for valentine's day, birthday, engagement, wedding, anniversary and other occasions. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Imported