bonyaaaa i ldya tbeyaaa:You can trust Costco to only offer the highest quality one-of-a-kind gemstones at the lowest possible price.  Our long-standing relationship with our suppliers guarantees we get the best selection at the best value.  Costco's experienced buying team works with our suppliers evaluating and hand-selecting each gemstone for its color, quality, and brilliance.  Our team of Graduate Gemologists then inspect every gemstone to ensure it meets the strictest quality standards in the industry in cut, color, clarity, and craftsmanship.  You can be confident your purchase is as special to us as it is to you.