Valley Rose 14K Gold Hilma Diamond Stud, Sapphire and Emerald Earrings. Unique abstract artistic studs, these geometric beauties are named after our favorite abstract artist. Featuring unique geometric triangle cut blue Sapphires from Australia, and  Marquise cut Emeralds from Brazil arranged in a creative silhouette, these earrings are sure to be a conversation starter. Sapphires are 4mm, Emeralds are6mmx3mm, and Lab diamonds 1.5mm (.015cts, total diamond carat weight .03cts).