Industrial Byproduct

Diamond

Cubic Carbon (C)

Herkimer Diamond

Quartz (Silicon Dioxide - SiO2)

Jasper

Agate/Jasper (Microcrystalline Quartz, SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

White Topaz

Aluminum Silicate Fluoride Hydroxide; Al2SiO4(F,OH)2

Satin Spar (often marketed as Selenite)

Gypsum (CaSO4·2H2O)

Sandstone

Arenite (primarily SiO2)

Mica Schist

Schist (Biotite/Muscovite dominant)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode

Crystalline Quartz (SiO2) within a sedimentary or volcanic host

Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)

Silicon Dioxide (SiO2) with various inclusions

Sandstone (Pebble)

Arenite (primarily SiO2)

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Chert (variations include Flint/Jasper)

Chert (SiO2)

Diamond (specifically Blue Diamond color appearance)

Carbon (C) with trace Boron

Red Jasper

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Quartzite

Quartzite (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Mica Schist

Schist (Biotite/Muscovite rich)

Pyrite in Quartz

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Gneiss (Metamorphosed Pebble)

Gneiss with Quartz/Feldspar banding

Milky Quartz with Chlorite inclusions

Silicon Dioxide (SiO2) with Chlorite group minerals

Diamond (Cluster Setting)

Carbon (C) - Diamond

Pink Himalayan Salt Rock (Halite)

Halite (Sodium Chloride, NaCl)

Diamond

Diamond (C)

Cubic Zirconia (Simulated Diamond)

Zirconium dioxide (ZrO2)

Aquamarine (Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Schist (Micaceous Schist)

Schist (containing mainly Muscovite and Quartz)

Milky Quartz with Mica

Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Ferruginous Oxides

Anthracite Coal

Anthracite

Granite Pegmatite with Muscovite Mica

Granite Pegmatite (Silicon Dioxide and complex silicates)

Epithermal Gold Ore (in Quartz/Rhyolite matrix)

Auriferous Quartz (Au + SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

Native Copper in Basalt

Cuprum (with Host Basalt)

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Limonite Stained Basalt

Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)