Igneous And Sedimentary Mixture

Potassium Feldspar

Orthoclase (KAlSi3O8)

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Gneiss

High-grade metamorphic rock (Gneiss)

Quartz (Druzy/Macro-crystalline)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (complex metamorphic silicate rock)

Quartz

Silicon Dioxide (SiO2)

Gneiss (specifically a water-worn pebble)

Gneiss

Banded Agate (Chert/Chaldcedony)

Silicon Dioxide (SiO₂)

Gneiss

Gneiss

Gneiss

Gneiss

Hematite with Magnetite

Iron Oxide (Fe2O3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Garnet (Almandine variety)

Almandine Garnet (Fe3Al2(SiO4)3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Quartz (Milky/Gray variety)

Silicon Dioxide (SiO2)

Quartz / Quartz Geode fragment

Silicon Dioxide (SiO2)

Dalmatian Jasper

Peralkaline rhyolite

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Sand Grain (Silica/Quartz Grain)

Silicon Dioxide (SiO2)

Pyrite in Matrix

Iron Sulfide (FeS2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Quartz / Common Agate

Silicon Dioxide (SiO2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite

Iron Sulfide (FeS2)

Dalmatian Jasper (Dalmatian Stone)

Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)

Calcite

Calcium Carbonate (CaCO3)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Gneiss (Banded Gneiss)

Gneiss