opals Definition

gemstones, agates, amethysts, semiprecious, beryl, peridot, garnets, diamonds, emeralds, topaz, labradorite, geodes, nephrite, tanzanite, cabochons, tsavorite, carnelian, morganite, topazes, sapphires, jasper, iolite, jade, quartz, lapis, marcasite, smoky quartz, aventurine, feldspar, zircon, ammonite, kyanite, chalcedony, vermeil, iron pyrite, jadeite, metamorphic rock, spinel, gemologist, cultured pearl, mica, gems, rubies, obsidian, citrine, silverwork, ochres, azurite, corundum, hollowware, malachite, gold, tourmaline, greenstone, soapstone, cinnabar, chrysocolla, minerals, vicuna, quartzite, concretions, hematite, wolframite, ironbark, chert, lithic, geochronology, lapis lazuli, adzes, purplish pink, birthstone, slipper orchid, netsuke, aquamarine, haematite, karats, coprolite, granites, gentians, precious metal, quartz crystal, prospectors, jewelry, olivine, phyllosilicate, igneous rock, cloisonne, rockhound, octahedron, tantalite, onyx, cycad, jewels, mineralogist, ironstone, burls, snuffbox, cowrie, amphibole, basalt,