57mm Indigo Gabbro Cabochon Pebble Blizzard Natural Polished Crystal Mystic Merlinite Mineral Stone Cab - Madagascar (#2) You will receive exactly this Indigo Gabbro Pebble - 57mm x 36mm x 19mm / 2 1/4 x 1 7/16 x 3/4 Inches; 65g / 2.3 oz / 325 Carat (see photo, the photos are taken under bright light, stand not included)! Indigo Gabbro is a relatively new crystal mined in Madagascar and in various locations in Alaska. It has an amazing array of colors from light indigo purple to black. Gabbro refers to a large group of dark, coarse-grained mafic, or igneous rock, formed of silicate [SiO2] or quartz that is rich in magnesium and iron. It has a chemical equivalent to basalt, but with decidedly different energies. Gabbro is an essential part of the oceanic crust. Indigo Gabbro also called Mystic Merlinite or Blizzard Stone. Gabbro is a combination of multiple minerals containing feldspar, chlorite, serpentine, muscovite, pyroxene, hercynite, and magnetite in a charcoal colored matrix; it may also contain small amounts of olivine, chrome garnet, actinolite, and biotite; It can also contain valuable amounts of chromium, nickel, cobalt, gold, silver, platinum, and copper sulfides. (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.)