Fleche d'amour (quartz). Pyrope (garnet).
Fluorite.
Quartz.
Fossil coral.
Rhodonite.
Garnet.
Rock crystal (quartz).
Grossularite garnet.
Rose quartz (quartz).
Heliotrope.
Ruby (corundum).
Hematite.
Rubellite (tourmaline).
Hiddenite (spodumene) Rutile.
Hornblende in quartz
Rutile in quartz (quartz).
Idocrase.
Sagenite (quartz).
Indicolite (tourmaline). Sapphire (corundum).
Iolite.
Silicified wood (quartz).
Isopyre.
Smoky quartz (quartz).
Jade.
Smoky topaz (quartz).
Jasper (quartz).
Spinel.
Jet (mineral coal).
Spodumene.
tabradorite.
Sunstone (feldspar).
Labrador spar (labradorite). Thetis hair stone (quartz.)
Lake George diamonds.(quartz). Thomsonite.
Lithia emeralds (spodumene). Tourmaline.
Made.
Topaz.
Malachite.
Turquois.
Moonstone (feldspar group). Venus hair stone (quartz).
Moss agate (quartz).
Willemite.
culite (quartz).
Williamsite (serpentine).
Obsidian.
Wood agate (quartz).
Olivine (chrysolite).
Wood jasper (quartz).
Opalized wood (opal).
Wood opal (opal).
Peridot (chrysolite).
Zircon.
Phenakite.
Zonochlorite (prehnite). Prehnite.
List of species and varieties found in the United States, but not met with in gem form.
Axinite.
Ilvaite.
Andalusite.
Opal.
Cassiterite.
Prase (quartz).
Chrysoberyl.
Sphene.
Cyanite.
Titanite.
List of species and rarieties not yet identified in any form in the United States.
Alexandrite.
Demantoid.
Cit's-eye chrysoberyl.
Euclase.
Cat's-eye quartz.
Lapislazulite.
Chrysoberyl cat's-eye.
Ouvarovite.
Chrysoprase.
Quartz cat's-eye.
List of gem stones occurring only in the United States.
Bowenite.
Rutile.
Chlorastrolite.
Thetis hair stone.
Chondrodite.
Thomsonite.
Hiddenite-
Willemite.
Lithia emerald.
Williamsite.
Novaculite.
Zonochlorite.
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