18k yellow gold one of a kind Ladybug ring featuring Rosarita with Onyx weighing 11.21 carats. Rosarita is a unique material, which derives its exceptionally rich, red color from the process of gold refining. It is a unique by-product of the 1960s and 1970s gold refining processes. Alaskan beach sand was smelted for its gold content and the slag by-product was Rosarita, which is essentially a gold-infused glass. The base material for Rosarita is silica (which is quartz particles) mixed with gold at high temperatures. Ready to Ship Metal: 18k yellow goldRing face: Approx. 18.8 x 15.3mmBand width: 2mmHandmade in New YorkStyle # R-3009-ROS-ONX / #200-1945 Currently offered in Finger Size 7, Please allow 24 - 48 hours for all other size options to ship