GEMSTONE FAMILIES

ALUMINIUM OXIDES
Corundum (emery, abruby, sapphire); Iolite

DIAMOND

SILICATES
Beryls (aquamarine, emerald); Feldspars; Garnets (garnet); Olivine (peridot); Quartz (amethyst, citrine, chalcedony); Topaz; Tourmalines

Diaphanous Vitreous
non-greasy non-resinous
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