Chicago based and established in 1983, JAS Diamonds offers the largest inventory in the Midwest! 11,000+ loose lab grown & natural diamonds up to 15cts with LIVE status on our website. Other offerings: lab & natural melee, layouts, custom diamond cutting, custom & pre-set lab grown jewelry, and a bridal ring collection. Ask about our Long Term Memo program! Saturday hours, overnight shipping, and reliable customer service included. Service You Can Trust, Inventory You can Rely On. Try us and see