- The Oasis Collection The O Band is crafted of 18 karat gold that carries a soft silhouette with the perfect balance of symmetry that is bold alone and can also compliment other pieces in the collection. 3mm wide. Quarter sizes are available upon request. Please make a note at checkout. Custom variations can be made with alternative stone sizes. For inquires: bespoke@katkimfinejewelry.com Available in Yellow Gold, White Gold, Rose Gold and Platinum. — Handcrafted in Los Angeles, California.
