This earrings features a delicate lab grown Onyx gemstone set in 14k gold plated earrings. A feminine earrings to glorify your jewelry collection ! =>Stone -Onyx =>Size of stone: 4*4mm => Metal Type - 14k gold plated - also available in sterling silver ***These studs come with a silicon backs. If you prefer gold filled or silver ones, please write me a note specifying that.