Sedimentary Or Metamorphic

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)3Si3O10(OH)2)

White Jade (Mutton Fat Jade / Nephrite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

White Marble

Recrystallized Calcite (CaCO3)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

Pink Quartzite

Quartzite (SiO2 with iron oxide impurities)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2

Quartzite

Quartzite (mostly SiO2)

Quartzite

Quartzite (SiO2)

Orange Quartzite / Carnelian Agate

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

Quartzite

SiO2 (Silicon Dioxide)

White Marble

Recrystallized Calcite / Calcium Carbonate (CaCO3)

Schist

Mica Schist

Brown Sandstone

Arenite (primarily Quartz and Feldspar, with Iron Oxide cement)

Ferruginous Sandstone

Arenite with Iron-Oxide cement (Fe2O3 · nH2O)

Emerald in Schist (Raw/Tumbled)

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities in Mica Schist

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Mica Schist

Mica Schist (contains Muscovite/Biotite, Quartz)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Schist

Schist (primarily mica-schist)

Schist

Mica Schist

Quartzite

Quartzite (primarily SiO2)

Red Quartzite

Quartzite (primarily SiO2)

Metagabbro / Epidote Gneiss

Epidote bearing Hornblende Gneiss

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

Nuummite

Orthoamphibole (mixture of Anthophyllite and Gedrite)

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Red Garnet (Pyrope or Almandine)

Magnesium aluminum silicate (Mg3Al2(SiO4)3) or Iron aluminum silicate (Fe3Al2(SiO4)3)

Milky Quartz (with trace inclusions)

Silicon Dioxide (SiO2)

Mica-rich Pegmatite

Pegmatite (rich in Muscovite and Biotite)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Chlorite/Moss Infusions

Silicon Dioxide (SiO2)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Quartzite with Iron Inclusions

Metamorphic Silicon Dioxide (SiO2) with impure Limonite/Hematite

Schist

Mica Schist (Group of medium-grade metamorphic rocks)