Listing is for Set of 6 Pieces of this Gemstone Stone - Sagentic Quartz Size - 10x28 mm to 13x40 mm Shape - Organic Weight - 59 Carats Treatment - No Treatment 100% natural & genuine Measurements & weight are close approximations. Note: Color may vary due to characteristics of the natural stone. Natural Sagentic Quartz Smooth Organic Loose Gemstone, 10x28 Mm To 13x40 Mm, Super Seven, Jewelry, Gift For Women, Set Of 6 Pieces