Brilliant Australian opals lend a flash of breathtaking color to these slender golden circle studs. 1/4" drop; 3/8" width. Post back. 14k gold/Australian opal. Made in the USA. SPACE: A shop for emerging and advanced designers. WWAKE's minimal forms, crafted in New York from ethically sourced stones by designer Wing Yau, redefine traditional heirloom jewelry as simple, valuable art objects infused with the wearer's stories..