Metamorphic Or Igneous

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Quartz

Quartz (SiO₂)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granitic Pegmatite

Granitic Pegmatite with Quartz and Feldspar

Greenstone

Metabasalt / Chlorite Schist

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Gneiss

Gneiss

Gneiss (Banded Gneiss)

Gneiss

Banded Gneiss

Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Banded Gneiss with Quartz Vein

Gneiss containing SiO2 (Quartz) intrusion

Gneiss

Gneiss

Gneiss (Metamorphosed Pebble)

Gneiss with Quartz/Feldspar banding

Granite Gneiss

Gneiss (Polymetamorphic Quartz-Feldspar-Mica rock)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Greenstone with Quartz Veining

Epidiorite or Metabasalt with SiO2 (Quartz) veins

Gneiss

Gneiss

Gneiss (Granitic Gneiss)

Gneiss

Epidote in Granite Gneiss

Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Tiger's Eye (Oeil de Tigre)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Citrine

Silicon Dioxide (SiO2) with trace Iron

Pyrite

Iron Sulfide (FeS2)

Quartz with Oxides

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural radiation

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Smoky/Grey Quartz Variant)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Tumbled)

Smoky Quartz (SiO2 - Silicon Dioxide)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz Pebble with Iron staining

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)