Metamorphic Or Igneous

Migmatite

Migmatite (Mixed Rock)

Blue faceted gemstone, likely synthetic sapphire or blue glass

Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Gold-bearing quartz (quartz with visible native gold)

Quartz (SiO₂) with native gold (Au)

Orange Calcite

Calcium Carbonate (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Polished brown gemstone, likely jasper or bronzite

Jasper: microcrystalline SiO₂; possible bronzite: (Mg,Fe)SiO₃

Pink faceted gemstone, likely synthetic cubic zirconia or pink sapphire

Uncertain from image; possible zirconium dioxide (cubic zirconia, ZrO₂) or corundum (pink sapphire, Al₂O₃)

Rose Quartz

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

Emerald in Matrix

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

Quartz with Chalcopyrite (or Pyrite)

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

Yellow Calcite

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)

Yellow faceted gemstone, likely citrine or yellow sapphire

Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Red Quartz

Silicon Dioxide (SiO2) with Hematite inclusions

Quartz with Chalcopyrite and Pyrite

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

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)

Seven Chakra Bonded Stone

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

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz vein rock

Milky quartz with smoky quartz; chiefly silicon dioxide (SiO₂)

Rhodonite, Gray Moonstone, and White Feldspar Mix

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

White quartz-rich pebble

Likely quartzite or milky-quartz pebble (SiO₂)

Likely weathered mica-rich rock fragment

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

Milky quartz (quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Milky quartz

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

Quartz Pebble

Silicon Dioxide (SiO2)

Blue cabochon gemstone ring

Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel

Quartz Crystal Cluster (with Selenite Satin Spar)

Silicon Dioxide (SiO2)

Limonite-stained Quartz

Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining

Gold-bearing quartz vein rock

Milky quartz (SiO₂) with probable native gold and iron-oxide staining

Polished green-inclusion stone, likely chlorite-included quartz

Quartz (SiO₂) with chlorite inclusions; exact identification is uncertain from the photograph

Milky quartz vein rock

Quartz (SiO₂), likely in a quartz-rich host rock with minor iron-stained minerals

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)