Metamorphic Or Igneous

Ruby (Raw Corundum)

Corundum (Al2O3:Cr)

Sandstone (Micaceous Sandstone)

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

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (Chalcedony), SiO2

Blue Quartz

Silicon Dioxide (SiO2) with fibrous inclusions (such as tourmaline, magnesio-riebbeckite, or crocidolite)

Green Aventurine (Tumbled)

Silicon Dioxide (Quartz with inclusions, SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Emerald

Beryl (Be3Al2Si6O18 with chromium and vanadium impurities)

Yellow Aventurine

Quartz with inclusion minerals (SiO2)

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide (SiO2) with inclusions

Amazonite

Amazonite (Microcline Feldspar) K(AlSi3O8)

Migmatite

Migmatite (Mixed Rock)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide with trace inclusions of dumortierite or titanium (SiO2)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Emerald in Matrix

Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6

White Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Quartz crystal with Pyrite inclusions

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Pyrite on Quartz (Fool's Gold in Quartz)

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz with Chalcopyrite (or Pyrite)

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Red Quartz

Silicon Dioxide (SiO2) with Hematite inclusions

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Mica (Biotite or Phlogopite variety)

Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Seven Chakra Bonded Stone

Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz

Rhodonite, Gray Moonstone, and White Feldspar Mix

Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

White quartz-rich pebble

Likely quartzite or milky-quartz pebble (SiO₂)

Milky quartz

Quartz (SiO₂), likely massive milky quartz with minor iron-oxide staining and inclusions

Quartz Pebble

Silicon Dioxide (SiO2)

Likely weathered mica-rich rock fragment

Probable schist, composed mainly of quartz, feldspar, and mica

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)