Mineral And Metamorphic Rock

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Native Gold (in the form of jewelry)

Gold (Au)

Yellow Quartz (Citrine or Citrine-colored Quartz)

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

Ruby (Rough/Raw)

Corundum (Al2O3:Cr)

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

Red Garnet

Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Basalt with vesicles (Amygdaloidal Basalt)

Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Smoky Quartz (SiO2)

Biotite / Black Mica

Biotite K(Mg,Fe)3AlSi3O10(F,OH)2

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Star Sapphire

Corundum (Al2O3) with Rutile inclusions

Peach Moonstone

Orthoclase Feldspar (KAlSi3O8)

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

Prehnite on Basalt

Prehnite - Ca2Al(AlSi3O10)(OH)2

Granite

Granite (Felsic Plutonic Rock)

Yellow Aventurine (specifically a carved crescent moon)

Silicon Dioxide (SiO2) with inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Yellow Aventurine (Quartz Quartzite)

Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 in Matrix)

Granite featuring Quartz Vein

Granite with hydrothermal silica (SiO2) intrusion

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (often composed of Quartz, SiO2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, Pyrite, and Calcite)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Vesicular Basalt with Lichen

Vesicular Basalt

Sandstone (likely Arkosic)

Arenite (SiO2 with KAlSi3O8)

White Marble

Calcite-rich Metasomatized Carbonate (CaCO3)

Granite

Granite (Felsic Plutonic Rock)

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)

Amethyst

Amethyst (Silicon Dioxide, SiO2)