Listing is for Set of 6 Pieces of this Gemstone Stone - Sagentic Quartz Size - 10x12 mm to 16x25 mm Shape - Organic Weight - 37.1 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, 10x12 Mm To 16x25 Mm, Super Seven, Jewelry, Gift For Women, Set Of 6 Pieces