We have made it our mission to consistently find and offer you the best and unique gemstones and minerals. As seen in the photos, these Mangano Calcite spheres have a beautiful color. The quality is good, with very few to no inclusions. Dimensions: 440gramm Ø 67mm Calcite is one of the most common minerals in the world and is primarily used in the pharmaceutical industry due to its high calcium content. Its German name, "Beinbruchstein," is derived from its attributed healing effects on bones due to this composition. Calcite has a unique property of double refraction, leading to its variety being named "Doppelspat" in German. Because of this distinctive feature, pure crystals are also used in the optical industry. However, due to its low hardness, Calcite is less suitable as a gemstone but is occasionally cut into cabochons or faceted for specific purposes. Due to its abundance, Calcite appears in a variety of colors and forms. Discovery Location: Helmand Province, Afghanistan