spinel Definition

chrome, corundum, diopside, smoky quartz, chalcedony, olivine, apatite, zircon, alexandrite, iolite, jadeite, morganite, beryl, rubicelle, pyrope, eclogite, pyroxene, spinel ruby, zns, plagioclase, phlogopite, goethite, feldspar, garnets, selenide, praseodymium, anorthosite, kaolinite, hornblende, aluminosilicate, scintillator, labradorite, pyrochlore, scheelite, transparent gem, phyllosilicate, aluminous, azurite, mgo, lutetium, telluride, calcium fluoride, quasicrystal, pyrites, boron nitride, aragonite, amphibole, pyrophyllite, crystallites, realgar, albite, zirconium oxide, metamorphic rock, covellite, lanthanide, niobate, cordierite, columbium, alkali metal, leucoxene, epidote, illite, phyllite, hematite, fluorapatite, mylonite, pentoxide, calcite, ytterbium, schistose, stibnite, cadmium sulfide, water sapphire, pleonaste, copper oxide, octahedron, adularia, yttrium oxide, haematite, actinolite, chrysocolla, anatase, cinnabar, cherty, smectite, titania, arsenide, eudialyte, osmium, anhydrite, blackbody, muscovite, icosahedral, biotite, chalcocite, allanite, spodumene, lapilli, formate, bastnasite,