Spinel faceted rectangle 10×4 mm

Stone type: Spinel Color: black Dimensions: 10×4 mm Thickness: 2.5 mm Shape: rectangle Grinding type: faceted Weight in carats: 1,28 Origin: Cambodia Treatment: untreated Purity: opaque Spinel – a mineral of the oxide cluster, included in the spinel group. It belongs to the group of rare minerals. The name comes from the characteristic sharp-edged shape of the crystals (in Latin“spina” – arrow).It forms isometric crystals (octahedrons or rhombic dodecahedrons), often there are approximations. It is brittle and transparent. It sometimes exhibits asterism and occasionally a cat’s-eye effect. Theoretically, it contains 28.2% MgO and 71.8% Al.2O3, abundant isomorphic admixtures of Cr, Zn, Fe, Mn result in the formation of many varieties differing in color: red in shades (s. ruby), bluish (s. sapphire), green (ceylonite), brown (pleonast), yellowish (rubicel), brownish-red (s. almandine), black (hercynite-s. ferrous), dark brown (galaxite-s. manganese), blue-green or yellow (gahnite-s. zinc). It occurs in granular clusters and isolated grains. It is found in: Thailand, Laos, Cambodia, USA, Madagascar and Burma. IMPORTANT: The texture pattern of the stones may differ minimally from that in the photograph. The color of the product in the photo may differ from the actual one due to parameters and display settings. In addition to retail sales, we also provide wholesale sales and customized grinding services for wholesale orders (more than one hundred pieces).