Mineral, Often Found As A Rock (Metamorphic)

Conglomerate

Conglomerate (a clastic sedimentary rock)

Quartz (Milk Quartz / Massive Quartz)

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Quartzite (predominantly SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Chalcedony

Chalcedony (a microcrystalline variety of Quartz, SiO2)

Pebble

Clast (specifically a granule or small pebble)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Bornite

Bornite (Cu5FeS4)

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Quartzite Pebble

Quartzite (predominantly Silicon Dioxide - SiO2)

Red Quartzite / Metasandstone River Pebble

Quartzite (primarily SiO2 with hematite inclusions)

Veined Limestone (Micrite) with Quartz/Calcite Veins

Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions

Unakite (Epidotized Granite)

Unakite; primarily composed of Epidote (Ca2(Al,Fe)3(SiO4)3(OH)), Orthoclase (KAlSi3O8), and Quartz (SiO2)

Quartzite (River Stone)

Quartzite

Gneiss (specifically Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Quartzite Pebble

Quartzite (SiO2)

Unakite

Epidotized Granite

Clear Quartz

Silicon Dioxide (SiO2)

Coal (Anthracite)

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Quartzite

Quartzite (SiO2)

Sandstone with Concretions / Liesegang Rings

Arenite with iron oxide banding

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Schist (Biotite Schist)

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

Nuummite

Nuummite (Ortho-amphibole rock, primarily Anthophyllite and Gedrite)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Serpentine

Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4

Quartzite River Rock

Quartzite (primarily SiO2)

Gneiss

High-grade Metamorphic Gneiss

Rhodonite

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

Quartzite

Quartzite (primarily SiO2)

Epidotite (Unakite variety)

Epidotized Granite (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

White Moonstone (Scolicite or White Feldspar var. )

Lattice-structure Silicate (KAlSi3O8)

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Quartzite Pebble

Quartzite (SiO2)

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)