Igneous, Sedimentary, Metamorphic, And Mineral

Quartzite

Quartzite (SiO2)

Milky Quartz (with Chlorite/Mineral Inclusions)

Silicon Dioxide (SiO2)

Schist with Biotite Inclusion

Biotite-bearing Mica Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Milky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

Banded Quartzite

Quartzite (SiO2 with impurities)

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Schist with Quartz

Mica Schist (contains Muscovite/Biotite and Quartz SiO2)

Mica Schist with Pyrite

Muscovite/Biotite Schist (Complex Silicate)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Schist (Graphite or Mica rich)

Crystalline Schist (often containing Muscovite, Biotite, or Graphite)

Rutilated Quartz

SiO2 with TiO2 inclusions (Rutile)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Quartzite River Cobble

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Anthracite Coal

Anthracite (high-rank coal)

Anthracite Coal

High-rank coal (primarily Carbon, C)

Red Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - variety Quartzite

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn%,Fe%,Mg,Ca)SiO₃

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite (River Pebble)

Metamorphosed Sandstone (SiO2)

Brecciated Limestone or Marble Pebble

Breccia / Calcite (CaCO3)

Quartzite (River Cobble)

Quartzite (primarily SiO2)

Orange Quartzite (River Pebble)

Quartzite (primarily SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Granite or Pegmatite in host rock

Granitoid / Felsic Intrusive Rock

Slate

Foliated Metamorphic Rock (composed mainly of clay minerals or micas)

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Granitic Gneiss

Felsic Polycrystalline Gneiss

Marble

Recrystallized Calcite (CaCO3)

Anthracite

Anthracite coal

Ferruginous Quartzite (Chert)

Quartzite with Iron inclusions (SiO2 + Fe2O3)

Dragon Blood Jasper

Epidote with Red Jasper (Quartz-rich aggregate)