Solid 14K Gold, 20 gauge earring studs. Solid in pairs only. Safira adorns a Genuine 3.5mm yellow Ethiopian Opal at the top, and genuine pink sapphires underneath. In a fan style, the earrings measure 10.9x7.4mm. Available in Yellow Gold, Rose Gold, and Rhodium plated White Gold. White gold is not ideal for people with metal allergies. If this is you, opt for Yellow or Rose Gold!