Ana Silver Co Large Rainbow Moonstone 925 Sterling Silver Ring Size 8 RING733807 100% Solid Sterling Silver. Gemstone(s): Rainbow Moonstone (Genuine). Main Stone Size/Head Size: 27 x 27mm, Total Weight: 10.5 grams. Unique and handcrafted, actual item pictured. Order ships within 1 day from California with USPS 1st Class Mail (Fast Delivery).