smoky quartz, cabochons, semiprecious, aventurine, beryl, morganite, chalcedony, peridot, nephrite, feldspars, jadeite, marcasite, spinel, corundum, mica, metamorphic rock, lapis, tourmaline, alexandrite, malachite, octahedron, plagioclase, iolite, scheelite, gemstone, amethysts, tsavorite, goethite, pyrope, citrine, azurite, chrysocolla, aluminosilicate, phlogopite, garnets, cinnabar, jasper, topaz, cherty, yellow ocher, hornblende, epidote, uraninite, kyanite, adularia, briolette, quartz, calcite, tanzanite, pyrophyllite, carnelian, phyllosilicate, olivine, eclogite, mylonite, stibnite, ochres, amphibole, topazes, purplish pink, celadon, steatite, aquamarine, carnotite, coprolite, sapphires, schistose, leucoxene, concretions, verdigris, striations, lepidolite, claystone, electrum, moonstones, barium sulphate, jade, emeralds, opalescence, vein quartz, phyllite, argillite, muscovite, eluvial, agates, ruby, lapilli, aluminous, opals, amphibolite, ultramarine, pyroxene, biotite, holmium, vermeil, parure, burnt umber, smithsonite, iron pyrite, anhydrite, realgar, ultramarine blue, feldspar, felspar, silt, oligoclase, albite, carbonate, granite, hues, precipitates, saliva, serpentine, silicate, turquoise, aqueous, augite, porphyritic, andesite, calcic, felspathic, alkalic, andesitic, decomposed, feldspathic, leucite, microcline, potassic