Sedimentary Or Metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions (Quartzite)

Ruby in Fuchsite (often sold as Ruby in Zoisite)

Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine

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

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Quartz / Quartzite

Silicon Dioxide (SiO2)

Epidote

Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Serpentine

Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Pink Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - primarily Quartzite or Quartz

Quartzite

Quartzite (SiO2)

Epidosite

Epidosite (composed mainly of Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Schist

Mica Schist

Quartzite

Quartzite (primarily SiO2)

Iolite (Cordierite)

Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18

Fuchsite on Quartz

Muscovite (KAl2(AlSi3O10)(OH)2) with Chromium impurities

Quartzite

Quartzite (primarily SiO2)

Unakite

Epidotized Granite

Sandstone

Sandstone ( преимущественно SiO2 )

Shale

Laminated Mudstone (Shale)

Sandstone

Arenite

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Red Quartzite

Metamorphic Quartzite (predominantly SiO2 with iron oxide impurities)

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

Quartzite with Iron Inclusions

Metamorphic Silicon Dioxide (SiO2) with impure Limonite/Hematite

Slate

Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)

Schist (Biotite/Mica Schist)

Medium-grade regional metamorphic rock (rich in Phyllosilicates)

Quartzite (or Massive Quartz)

Silicon Dioxide (SiO2)

Blue Quartzite (Aventurine)

Quartzite (primarily SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Sapphire

Corundum (Al2O3)

Quartz (Quartzite fragment)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Schist (Garnet-Mica Schist)

Garnetiferous Mica Schist (primarily Muscovite/Biotite and Almandine Garnet)

Quartzite

Quartzite (primarily SiO2)

Epidosite

Epidosite (composed primarily of Epidote and Quartz)

Unakite (Tumbled)

Unakite (altered granite)

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Garnet Rhyolite

Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet

Marble (Fire and Ice or Pink Veined)

Metamorphosed Limestone (principally CaCO3)