Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Quartzite

Quartzite (primarily SiO2)

Unakite

Unakite (Epidotized Granite)

Quartzite

Quartzite (primarily SiO2)

Yellow Quartzite (River Cobble)

Quartzite (mainly SiO2)

Folded Schist / Gneiss (Metamorphic Rock)

Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)

Arkosic Sandstone (or Conglomeritic Sandstone fragment)

Arkose (rich in feldspar)

Agate (Polished Nodule)

Agate (Silicon Dioxide, SiO2)

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Veined Quartz

SiO2 (Silicon Dioxide)

Smoky Quartz in Matrix

Silicon dioxide (SiO2) within Pegmatite/Gneiss

Orange Satin Spar (Satin Spar Selenite)

Satin Spar - Hydrous Calcium Sulfate (CaSO4·2H2O)

Epidote (likely Pistacite in Epidosite rock)

Epidote: Ca2(Al,Fe)3(SiO4)3(OH)

Sandstone (Micaceous Sandstone)

Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)

Aventurine

Quartz (Aventurine variety)

Garnet

Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)

River Rock (Quartzite/Chert conglomerate)

Quartzite (SiO2)

Garnet

Almandine formula: Fe3Al2(SiO4)3

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Quartzite

Quartzite (SiO2)

Yellow Apatite Sphere (Polished)

Fluorapatite / Ca5(PO4)3F

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Unakite

Epidotized Granite

Emerald with Matrix (Emerald in Mica Schist)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Greenstone (Greywacke or Nephrite Jade variant)

Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Corundum

Corundum (Al2O3)

Biotite Schist

Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Riverstone Quartzite

Quartzite (primarily SiO2)

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Mica Schist

Mica Schist (primarily Muscovite and Biotite phyllosilicates)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

River Rock (likely Quartzite or Quartz-rich Siltstone)

Quartzite (SiO2)

Mica Schist

Mica Schist (predominantly composed of Muscovite or Biotite silicates)

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Granodiorite (Gneissic Pebble)

Granodiorite displaying minor foliation

Quartzite with Hematite staining

Quartzite (SiO2)

Onyx Marble (also commonly called Onyx)

Calcite (CaCO3), often with other mineral impurities