2.75" Polychrome Jasper Puffy Heart Multicolor Natural Polished Crystal Mineral Stone Heart - Madagascar You will receive exactly this Polychrome Jasper Heart - 70mm x 63mm x 34mm / 2 3/4 x 2 1/2 x 1 3/8 Inches; 189g / 6.7 oz (see photo)! Jasper is an opaque form of Chalcedony, which is a microcrystalline variety of the mineral Quartz. It often contains an abundance of impurities, and therefore some regard it as a rock instead of a mineral. Polychrome Jasper is a variety of chalcedony (quartz), has a microcrystalline aggregate (trigonal) crystal structure, also called Desert Jasper or Royal Savannah Jasper. Chemical Composition: (SiO2) Silicon Dioxide with inclusions (iron hydrates); Hardness: 7; Stone Type/Family: Member of the Chalcedony Clan, Quartz family, Silicates Class; Polychrome jasper exhibit combinations of patterns (such as banding from flow or depositional patterns (from water or wind), dendritic or color variations) resulting in what appear to be scenes or images, on a cut section. (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)