Metamorphic, Likely Sedimentary With Quartz Veins

Quartz (likely)

Quartz (SiO2 - Silicon Dioxide)

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Rough Quartz (likely Rose or Smoky variant)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Crushed Limestone and Calcite

Calcium Carbonate (CaCO3)

Pyrite in Matrix (likely Quartz or Schist matrix)

Iron Sulfide (FeS2)

Quartz (specifically Milky Quartz/Quartzite)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz

Quartz (SiO2)

Quartz with Mica (Schist/Pegmatite fragment)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Milky Quartz with Chlorite/Moss Infusions

Silicon Dioxide (SiO2)

Emerald with Matrix (Emerald in Mica Schist)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Quartz / Limestone Gravel

SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Quartz (likely a clear or rock crystal variety)

Quartz (SiO2 - Silicon Dioxide)

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

River Pebble (Gneiss or Quartzite variant)

Course-grained Metamorphic Rock (likely SiO2 dominant)

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz

Silicon Dioxide (SiO₂)

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz (in a rock matrix)

Quartz (SiO2)

Quartz Vein in Pelite (Metamorphic Rock)

Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Epidote in Matrix (likely Amphibolite or Gneiss)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix

River Quartzite Siltstone

Quartz-rich Meta-siltstone (SiO2 dominated)

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Quartz (vein quartz)

SiO2 (Silicon Dioxide)