Our diamond search tool allows you to search for your perfect diamond by shape, price range, carat weight, grade range and color. Before you start diamond shopping, you want to have an understanding of what you're buying. Visit our diamonds guide which simplifies the 4 C's of diamonds - cut, color, clarity, and carat weight, so you can select your diamond based on the same criteria jewelers use to grade them. All presented loose diamonds are GIA (Gemological Institute Of America) certified. These loose GIA diamonds we have with all different cut and shape available: round, princess, emerald, asscher, marquise, oval, radiant, pear, heart and cushion loose diamonds. Please make our choice from our selection of loose diamonds below to find the perfect loose GIA diamond to fit your engagement ring or other jewelry piece.