Mineral Or Sedimentary Rock (With Mineral Inclusions)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Quartz Geode (partially formed)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Yellow Jasper (Iron-stained Quartz)

Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)

Quartz Geode

Silicon Dioxide (SiO2)

Blue Aventurine

Quartzite with Dumortierite inclusions (SiO2 + Al7(BO3)(SiO4)3O3)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2)

Rutilated Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions

Sandstone (Pebble)

Arenite (composed primarily of SiO2)

Red aventurine

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Sandstone (Red)

Arenite (Fe2O3 heavy)

Sandstone

Arenite (SiO2 primarily)

Sandstone

Arenite (SiO2 based)

Asphalt Concrete (Bituminous Conglomerate)

Anthropogenic Bituminous Conglomerate

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

Orange Calcite

Calcium Carbonate (CaCO3)

Carnelian

Carnelian (SiO2 with Iron Oxide impurities)

Smoky Quartz (with possible Garnet inclusions)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Dendritic Agate (also known as Dendritic Siltstone or Mudstone)

Silicon Dioxide with Manganese/Iron Oxide inclusions (SiO2 + MnO2)

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Fe2O3 cement)

Amber

Succinite

Quartz / Common Opal

Silicon Dioxide (SiO2)

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Geode with Iron-Stained Quartz/Calcite

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix

Sandstone

Arenite (primarily SiO2)

Limestone with Quartz/Calcite Veins

Sedimentary Limestone (CaCO3 with SiO2 or CaCO3 intrusions)

Greenstone / Chert

Cryptocrystalline Quartz (SiO2) or Altered Basalt

Sandstone (Pet Rock)

Clastic sedimentary rock (primarily SiO2)

Sandstone (likely Quartz Sandstone)

Arenite (SiO2 based)

Chrysocolla and Malachite Beads

Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Basalt with Epidote (Flowerstone-like texture)

Amygdaloidal Basalt (silicate mineral inclusions)

Sandstone

Arenite (SiO2 primarily)

Quartz Geode (Cracked Open Fragment)

Silicon Dioxide (SiO2)

Biotite Schist

Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]

Sandstone

Arenite (primarily SiO2)