Indonesian zircon.
Precious and non precious metals like...iridium, rhodium, iron, zircon...etc gemstones ie sapphire, ruby, tourmaline, aquamarine etc.
Ruby, sapphire, emerald, spinel, tourmaline, opal, aquamarine, chrysoberyl, alexandrite, cats eye, zircon, garnet, hessanite garnet, amethyst, tanzanite, green garnet (savourite), peridot, quartz, beryls, green beryl.
Ruby, Sapphire, Emerald, Spinel, Tourmaline, Opal, Aquamarine, Chrysoberyl, Alexandrite, Cats Eye, Zircon, Garnet, Hessanite Garnet, Amethyst, Tanzanite, Green Garnet (savourite), Peridot, Quartz, Beryls, Green Beryl.