Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Milky and Citrine-type Quartz

Silicon Dioxide (SiO2)

Druzy Quartz Geode (Oco or Moroccan variety)

Silicon Dioxide (SiO2)

Druzy Quartz on Chert/Siltstone

Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix

Clear Quartz (beads in a bracelet)

Quartz (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz - SiO2)

Garnet Schist or Garnet-bearing Quartzite

Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)

metamorphic

Milky Quartz

Silicon Dioxide (SiO2)

Quartz on Host Rock

Silicon Dioxide (SiO2)

Mineral Specimen

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Chert Geode or Nodule

Microcrystalline Quartz (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Clear Quartz Point

Silicon Dioxide (SiO2)

Gold

Native Gold (Au)

Gneiss

High-grade metamorphic rock (Gneiss)

metamorphic

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Metamorphic Rock

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Banded Chert

Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)

Sedimentary

Sunkissed Quartz or Hematoid Quartz

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

igneous

Quartz Druzy Geode

Silicon Dioxide (SiO2) - Crystalline Variety

Limestone with Calcite Veins

Calcium Carbonate (CaCO3)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (River Cobble)

Clastic Sedimentary Rock (primarily Quartz with Feldspar)

Sandstone (likely Calcareous or Micaceous)

Clastic sedimentary rock (primarily Quartz with Cementing Agents)

Druzy Quartz on Sandstone

Silicon Dioxide (SiO2) with Quartz crystals

Quartz

Silicon Dioxide (SiO2)

Blue Quartz

Quartz (SiO2) with inclusions

Milky Quartz (with Iron Oxide staining)

Silicon Dioxide (SiO2)