Industrial Byproduct

Silver (Sterling Silver)

Argentum (Ag) mixed with Copper (Cu); Formula: Ag+Cu

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Agate (specifically a Yellow/Honey Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Rough Green Tourmaline (Verdelite)

Elbaite (Complex Silicate) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4

White Agate (Tumbled)

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Agate Geode

Silicon Dioxide (SiO2)

Painted River Pebble (likely Basalt or Greywacke)

Aphanitic Lithic Clast with Anthropogenic Pigment coating

Banded Agate (Brazilian Agate Slice)

Chalcedony (Silicon Dioxide / SiO2)

Chert (specifically Blue or Grey Chert/Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (specifically Flint or Gray Chalcedony)

Microcrystalline Quartz (SiO2)

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Banded Agate

Cryptocrystalline Quartz (SiO2)

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Quartz Geode

Silicon Dioxide (SiO2)

Blue Quartzite (River Pebble)

Quartzite (primarily SiO2 with Dumortierite or Crocidolite inclusions)

Desert Rose (Baryte or Gypsum Rose)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Honey Calcite

Calcium Carbonate (CaCO3)

Wishing Stone (Quartz-veined Siltstone or Graywacke)

Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)

Diamond

Carbon (C)

Chalcedony (specifically Agate or Flint)

Silicon Dioxide (SiO₂)

Anthracite Coal

Anthracite

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Quartzite

Quartzite (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Garnet Schist

Almandine-Muscovite Schist

Rutilated Quartz

SiO2 with TiO2 inclusions

Quartzite

Quartzite (primarily SiO2)

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Orange Calcite

Calcium Carbonate (CaCO3)

Red Jasper

Silicon Dioxide (SiO2) - Opaque microcrystalline quartz

Chert (Chert Nodule with Cortex)

Microcrystalline Quartz (SiO2)

Ruby

Corundum (Al2O3 with Chromium traces)

Chert (varieties: Flint or Chalcedony)

Microcrystalline silica (SiO2)

Red Garnet

Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)

Muscovite Schist

Muscovite (KAl2(AlSi3O10)(OH)2) in Schist

Smoky Quartz and Clear Quartz Geode

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Dumortierite Quartz (Blue Quartz)

Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)