HC Set: 3.4" Rich Blue Lapis Lazuli w/Pyrite 12 Point Merkaba Star Natural Sparkling Stunning Crystal Hand Carved Mineral Stone Star - Afghanistan + One Polished Clear Quartz Cabochon (#2) You will receive exactly this Lapis Lazuli 12 Point Star - 85mm x 83mm / 3 3/8 x 3 1/4 Inches; 71g / 2.5 oz (see photo, the photos are taken under bright light, the last photo is taken on the mirror surface)! The dimensions of the star are given based on the maximum distance between two adjoining tops of the star. The name is international, from the Latin, lapis, which means stone, and from the Arabic, azul, which means blue. It literally means "blue rock" and is actually a rock rather than a mineral. It is composed of a highly variable mixture of the minerals lazurite, pyrite and calcite. The best Lapis Lazuli is uniformly deep blue in color, being opaque to semi-translucent and consist almost totally of lazurite. Chemical formula: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2; Mohs Hardness: Varies between the 3 of calcite and the 5 to 5.5 of lazurite. In additional, you will get one of the Clear Quartz Cabochon similar to the one in the listing, the size and the color of the cabochon may slightly vary as well due to the fact that all minerals are different. Approximately Size: 31mm x 21mm x 16mm / 1 1/4 x 13/16 x 5/8 Inches; Approximately Weight: 12-22gr / 0.4-0.8 oz. In addition to lazurite, specimens of lapis lazuli usually contain calcite and pyrite. Sodalite, hauyne, wollastonite, afghanite, mica, dolomite, diopside, and a diversity of other minerals might also be present. To be called "lapis lazuli," a rock must have a distinctly blue color and contain at least 25% lazurite. (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.)