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

Greywacke (River Pebble)

Greywacke sandstone with quartz veining

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone with Quartz Veining

Arenite with hydrothermal quartz (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Pyrite in Matrix (Quartz/Schist)

Iron Sulfide (FeS2)

Jasper with Quartz inclusions

Silicon Dioxide (SiO2) - Microcrystalline Chalcedony

Quartz

Quartz (SiO₂)

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

Quartz (Milky and Bull Quartz)

Silicon Dioxide (SiO2)

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Quartz

Quartz (Silicon Dioxide - SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Ferruginous Sandstone (Ironstone Conglomerate fragments)

Ferruginous clastic sedimentary rock (SiO2 cemented by Fe2O3)

River Rock (Quartzite/Chert conglomerate)

Quartzite (SiO2)

Quartz

Silicon Dioxide (SiO2)

Basalt with Quartz/Feldspar Vein

Amygdaloidal Basalt with Plutonic intrusion (SiO2/KAlSi3O8)

Druzy Quartz on Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gold

Native Gold (Au)

Milky Quartz

Milky Quartz (Silicon Dioxide, SiO2)

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Quartz (various varieties)

SiO₂ (Silicon Dioxide)

Quartz (Drusy/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Chert Pebble with Quartz Veining

Microcrystalline Quartz (SiO2)

Quartzite (Yellow/Orange variety)

Quartzite (primarily SiO2)

Pink Opal (Common Opal)

Amorphous Hydrated Silica (SiO2·nH2O)

Red Jasper (beads)

SiO₂ (Silicon Dioxide)

Sandstone

Sandstone (clastic sedimentary rock)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Cinnabar in Quartz

Silicon Dioxide (Quartz, SiO2) with Mercury Sulfide inclusions (Cinnabar, HgS)

Basalt with Calcite Veins

Basalt (Mafic Volcanic Rock)