Below is a gallery of rough diamonds, natural crystals of genuine raw, uncut diamond for sale from various countries around the world. These are real diamond that gemstones are made from - not Herkimer Diamonds that are common quartz. Many different crystal forms are available: Octahedral, Cubic, Macle Twins, Balas crystals. All diamonds are natural crystals, exactly as they occurred naturally in the Earth. No polishing, cutting or alteration of any kind. Most commonly available diamond specimens are from South Africa, Australia, and Democratic Republic of Congo. New diamonds are added frequently, check back often.