Metamorphic

Unakite

Epidotized Granite

Mica Schist

Mica Schist (Complex Silicate Rock)

Quartzite

Quartzite (primarily SiO2)

Schist (Diamond Drill Core)

Mica Schist

Garnet

Almandine (Fe3Al2(SiO4)3)

Green Quartzite (River Stone)

Metamorphic Quartz (SiO2) with inclusions (typically Fuchsite or Chlorite)

Green Quartzite

Metamorphic Quartz (SiO2) with Chromium-rich inclusions (Fuchsite)

Slate

Foliated Metamorphic Rock (primarily clay minerals and micas)

River Pebble (Gneiss or Quartzite variant)

Course-grained Metamorphic Rock (likely SiO2 dominant)

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Anthracite Coal

Anthracite (Carbon-based sedimentary-derived metamorphic rock)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Slate with Pyrite Inclusions

Foliated Metamorphic Rock (with Iron Sulfide FE-S2)

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Schist

Mica Schist (primarily Muscovite and Quartz)

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

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)

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

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

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Serpentine

Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Banded Gneiss

Gneiss

Almandine Garnet

Iron aluminum silicate - Fe3Al2(SiO4)3

Pink Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - primarily Quartzite or Quartz

Quartzite

Quartzite (primarily SiO2)

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Fuchsite on Quartz

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

Iolite (Cordierite)

Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18

Unakite

Epidotized Granite

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Fuchsite Schist

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

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Yellow Quartzite

Quartzite (primarily Silicon Dioxide - SiO2)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Red Quartzite River Stone

Quartzite (SiO2)

Schist

Mica Schist

Soapstone

Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)

Yellow Aventurine (or Citrine-colored Quartz)

Silicon Dioxide (SiO2) with inclusions

Quartzite with Chert inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)