Industrial By Product

Wishing Stone with Quartz Vein

Hydrothermal Quartz Vein in Metasedimentary Matrix (primarily SiO2)

Hypersthene

(Mg,Fe)SiO3 - Enstatite-Ferrosilite series

Milky Quartz (with Iron Oxide staining)

Quartz (Silicon Dioxide - SiO2)

Amethyst Geode (polished heart-cut)

Silicon Dioxide (SiO2) with iron impurities

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz / River Cobble

Silicon Dioxide (SiO2)

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Anthracite Coal

Low-grade metamorphic carbonaceous rock

Jade (Jadeite/Nephrite)

NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)

Garnet Schist

Almandine-Garnet Mica Schist

Orange Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz

Silicon Dioxide (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Yellow Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide, SiO2)

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Rough Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Smoky Quartz (with Druzy/Polished Edge)

Smoky Quartz (Silicon Dioxide, SiO2)

Ferruginous Quartz

SiO2 (Silicon Dioxide) with Iron Oxide inclusions (FeO(OH) / Fe2O3)

Green Fluorite (Beaded)

Fluorite (Calcium Fluoride, CaF2)

Diamond (Green tinted)

Carbon (C) with trace impurities or lattice defects

Mica Schist

Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)

Granite Pegmatite

Phaneritic Plutonic Igneous Rock

Ruby

Corundum (Al2O3 with Chromium trace elements)

Quartz Pebble

Silicon Dioxide (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Pink Chalcedony (Agate/Jasper blend)

Silicon Dioxide (SiO₂)

Desert Rose (Gypsum Rose)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Quartz (Milky/River Quartz)

Silicon Dioxide (SiO2)

Diamond

Diamond (a metastable allotrope of carbon, C)

Rough Diamond

Diamond (pure Carbon, C)

Diamond (Cut jewelry specimen)

Diamond (pure Carbon, C)

Quartzite

Quartzite (primarily SiO2)

Anthracite Coal

Anthracite

Aquamarine

Beryl (Be3Al2Si6O18)

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Anthracite Coal

Anthracite (Carbon ≥ 86%)

Rose Quartz

Silicon Dioxide (SiO2)

Milky or Greenish Quartz Pebble

Silicon Dioxide (SiO2)

Common Opal

Amorphous Hydrated Silica (SiO2·nH2O)

Chert (Yellow Jasper/Flint)

Silicon dioxide (SiO2) - Cryptocrystalline Quartz