Welcome to Plateau Jewelers, the custom jewelry and diamond experts in Sammamish, WA. We love crafting personalized fine jewelry using ethically sourced and sustainable materials. Since 1996 people have come to us for engagement rings, diamond earrings, diamond bracelets, right hand rings and more. We make many of these items one-of-a-kind. Others are from some amazing designers like Hearts On Fire, Memoire, Novell, and E.L Designs.