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Abalone Acrylic Agate Almandine Garnet Aluminium Amazonite Amber Amethyst Aquamarine Bakelite Black Opal Bowenite Brass Bronze Ceramic Chalcedony Chlorastrolite Chrome Chromium plated brass Chrysoberyl Chrysoprase Citrine Copper Coral Cornelian Crystal Demantoid Garnet Diamond Duralumin Emerald Emerald Paste Enamel Epoxy Resin Faience Faience Scarab Faux Amethyst Faux Diamond Faux Emerald Faux Pearl Faux Peridot Faux Sapphire Faux Tourmaline Fire Opal Galalith Garnet Gilded silver Gilt metal Glass Gold Golden Beryl Hematite Hessonite Garnet Horn Ivory Jade Jadeite Jasper Jet Kunzite Laboradite Lapis Lapis lazuli Madeira Citrine Malachite Marcasite Matt Enamel Metal Mirror Moonstone Moss Agate Mother of Pearl Needlework Nickel plated brass Niello Onyx Opal Opal Doublet Painted Painted Ivory Parcel gilt silver Paste Pâte de Verre Pearl Peridot Perspex Pewter Pinchbeck Pink Sapphire Pink Topaz Pink Tourmaline Plastic Platinum Plique-à-jour Plique-à-jour enamel Precious Opal Quartz Rhinestones Rock Crystal Rose Diamond Rose Quartz Ruby Ruskin Plaque Sapphire Sard Seed Pearl Shagreen Silver Silver Chromed Silver Gilt Silver Plated Metal Smokey Quartz Spinel Star Sapphire Steatite Swiss Lapis Synthetic Ruby Synthetic Sapphire Synthetic Spinel Tapestry Titanium Topaz Tortoiseshell Tourmaline Turquoise Two Colour Gold Water Opal White Gold Wood Yellow Gold Yellow Sapphire Zircon