Mineral (Synthetic Glass)

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Jasper

Jasper (Silica/Silicon Dioxide, SiO2)

Quartz (Milky or Iron-Stained)

Silicon Dioxide (SiO2)

Sandstone (likely Quartzose Sandstone pebble)

Arenite (primarily SiO2)

Botryoidal Chalcedony (likely Chert or Agatized Coral)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Clear Quartz Crystal (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Carved Merkaba)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Amethyst

Silicon Dioxide with iron impurities (SiO2)

Amethyst

Amethyst (Silicon Dioxide with iron impurities), SiO2

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pink Granite

Granite (Phaneritic intrusive rock rich in K-feldspar)

Jasper (Iron-stained)

Silicon Dioxide (SiO2) with iron oxide inclusions

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone

Arenite (primarily SiO2)

Sandstone with Iron Oxide

Arenite (SiO2 with Fe2O3 staining)

Sandstone (Quartz-rich)

Sandstone (SiO2 dominated)

Tumbled Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Green Aventurine

Silicon Dioxide (SiO2 with Fuchsite inclusions)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Banded Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)

Quartzite

Quartzite (primarily SiO2)

Sandstone (Painted)

Arenite (primarily SiO2)

Sandstone (Ferruginous)

Arenite (Fe2O3 rich)

Sandstone

Arenite (composed primarily of SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (specifically Citrine or Yellow Quartzite pebble)

Silicon Dioxide (SiO2)

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz Crystal (specifically a milky or semi-translucent single crystal point)

Silicon Dioxide (SiO2)