Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Pink Sapphire

Corundum (Al2O3 with chromium and iron traces)

Smoky Quartz (Rough)

Silicon Dioxide (SiO2)

Peridotite (with Olivine)

Peridotite (dominantly (Mg, Fe)2SiO4)

Ruby

Corundum (Al2O3 with Chromium traces)

Pyrite

Iron Sulfide (FeS2)

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Granitic Gravel

Granite (Quartz, Feldspar, and Mica mixture)

Quartz Sand

Silicon Dioxide (SiO2)

Strawberry Quartz

Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions

Granite Pegmatite with Muscovite Mica

Granite Pegmatite (Silicon Dioxide and complex silicates)

Quartz (Bull Quartz)

Silicon Dioxide (SiO2)

Magnetite / Iron-Rich Basalt

Magnetite bearing Mafic Rock (Fe3O4)

Magnetite or Hematite Nodule

Iron Oxide (Fe3O4 or Fe2O3)

Milky Quartz (Water-worn Pebble)

Silicon Dioxide (SiO2)

Smoky Quartz

Quartz (Silicon Dioxide, SiO2)

Chrysocolla on Matrix

Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)

Sapphire

Corundum (Al2O3)

Yellow Sapphire

Corundum (Al2O3)

Magnetite / Ironstone Pebble

Magnetite (Fe3O4)

Orange Calcite

Calcium Carbonate (CaCO3)

Red synthetic corundum (ruby-colored lab-grown sapphire)

Corundum, aluminum oxide (Al₂O₃), likely synthetic and chromium-colored

Yellow Sapphire

Corundum (Al2O3)

Black Tourmaline (Schorl)

Schorl (Complex sodium iron aluminum borosilicate)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Sapphire

Corundum (Al2O3)

Sunstone

Feldspar group (Oligoclase / Labradorite)

Orange chromium diopside (likely tumbled)

Diopside, CaMgSi₂O₆; orange color may reflect iron-rich composition or surface treatment/inclusion

Pyrite

Iron Sulfide (FeS2)

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Epidote-bearing Rock

Epidote / Silicate mineral aggregate

Sapphire

Corundum (Al2O3)

Quartz on Greenstone

Silicon Dioxide (SiO2) on Altered Igneous Geologic Unit

Agate

Silicon dioxide (Chalcedony), SiO2

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Granite Pegmatite

Coarse-grained Granite (SiO2 - Aluminum and Alkalies)

Vesicular Rhyolite

Extrusive igneous rock (high-silica rhyolite)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)