Igneous And Sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Disulfide (FeS2)

Conglomerate with Quartz Inclusions

Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz fragment

Quartz (silicon dioxide, SiO₂), likely milky or smoky quartz

Dalmation Stone (Dalmation Jasper)

Peralkaline Rock with Feldspar and Arfvedsonite

Dyed Dalmatian Stone

Aplite (Alkali-feldspar granite) with Arfvedsonite

Quartz

SiO2

Quartz

Silicon Dioxide (SiO2)

Quartz crystals on matrix

Silicon dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

White Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

K-Feldspar (Potassium Feldspar)

Orthoclase / Microcline (KAlSi3O8)

Quartz

Silicon Dioxide (SiO2)

Tumbled White Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Calcite (with iron oxide staining)

Calcium Carbonate (CaCO3)

Glacial Erratic Boulder (Sandstone / Granite)

Glacial Erratic / Sandstone (SiO2 dominated)

Amethyst and Calcite collection

Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)

Pyrite (Tumbled)

Iron Disulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Pyrite in Matrix

Iron Sulfide (FeS2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Colorless Quartz (Rhinestone)

Silicon Dioxide (SiO2)

White Chalcedony (Agate)

Silicon Dioxide (SiO2)