Igneous, Sedimentary, Metamorphic, And Mineral

Tiger's Eye

Silicon Dioxide (SiO2) with fibrous inclusions

Pink Granite (Gneissic transition)

Pink Biotite Granite

Yellow Aventurine (Yellow Quartzite)

Silicon Dioxide (SiO2) with inclusions

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

White Marble

Metamorphosed Limestone (principally CaCO3)

Quartzite

Quartzite (primarily composed of SiO O₂)

Quartzite Pebble (River Rock)

Metamorphic Quartzite (predominantly SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Yellow Quartzite (Onyx Pebble)

Silicon Dioxide (SiO2) - Quartzite

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite mica

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite inclusions)

Quartzite

Quartzite (chiefly SiO2)

Dyed Agate

Silicon Dioxide with artificial pigment (SiO2)

Jasper Conglomerate (Puddingstone)

Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)

Marble

Recrystallized Calcite (CaCO3)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Garnet Schist

Garnetiferous Micaceous Schist

Anthracite Coal

Anthracite (Carbon Content: 86%-97%)

Quartz with Mica (likely Muscovite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride

Anthracite Coal

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Coal (Anthracite)

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

Quartzite with Iron Banding

Metamorphosed Quartz-rich Sandstone (SiO2 with Fe2O3 inclusions)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentine with Quartz Vein

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4 with SiO2 veins

Yellow Quartzite (River Stone)

Quartzite (primarily SiO2)

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Quartz with Schist Inclusion

Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Quartzite

Quartzite (primarily SiO2)

Yellow Aventurine

Quartz (Silicon Dioxide - SiO2) with inclusions of Mica

Rhodonite

Rhodonite (MnSiO3)

Quartzite (Banded)

Metamorphosed Sandstone (SiO2 with impurities)

Marble

Metamorphic rock composed of Recrystallized Carbonate Minerals (chiefly CaCO3)

Feldspar-rich Quartzite

Meta-arkose (Quartz-Feldspar Quartzite)

Quartzite Pebble (River Rock)

Quartzite (mainly SiO2)

Quartzite with Chert inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)

Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)

Quartzite

Quartzite (SiO2 silicon dioxide)

Mica Schist

Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)