Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Fuchsite

Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)

Quartzite (Water-worn Cobble)

Quartzite (Composition: 90%+ SiO2)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Red Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide - SiO2)

Quartz (Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Quartzite (River Cobble)

Quartzite (SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Citrine Geode Fragment

Citrine (Silicon Dioxide with Iron Impurities), SiO2

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Pyrite in Shale

Iron Sulfide (FeS2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Graphite-veined Quartzite

Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)

Unakite

Epidote-Feldspar rock

Unakite

Epidotized Granite

Satin Spar (often marketed as Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Quartzite River Rock

Quartzite (primarily SiO2)

Unakite

Unakite (Epidotized Granite)

Rose Quartz

Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)

Zebra Rock / Zebra Marble

Banded Limestone-Marble Transition

Chlorastrolite (Greenstone)

Chlorastrolite (Pumpellyite variety), Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2·H2O

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Schist

Mica Schist

Quartz

Quartz (SiO2 - Silicon Dioxide)

Gneiss (Metamorphic Rock)

Gneiss

Arfvedsonite (often mistakenly sold as Astrophyllite)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]

Rock Crystal Quartz

Quartz (SiO₂)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Quartzite River Rock (with Limonite staining)

Quartzite (SiO2)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

White Jade / White Chalcedony

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)

Orange Quartzite (River Pebble)

Quartzite (SiO2 with Iron Oxide inclusions)

Quartzite (or Ferruginous Quartzite)

Metamorphosed Quartz Sandstone (SiO2 with Fe2O3 impurities)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Unakite

Epidotized Granite

Granite Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartzite

Quartzite (primarily SiO2)