Mineral, Variety Of Quartz

Jasper

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Quartz

Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Clear Quartz

Silicon Dioxide (SiO2)

Hematoid Quartz

Ferruginous Quartz (SiO2 with Fe2O3 inclusions)

Quartz Pebble

Silicon Dioxide (SiO2)

Ferruginous Quartz (Carnelian-tinted Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz with Inclusions

Silicon Dioxide (SiO2) with various mineral inclusions

Clear Quartz

Silicon Dioxide (SiO2)

Rose Quartz

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

Pink Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Druzy Geode fragment)

Silicon Dioxide (SiO2)

Massive Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Carved Dragon)

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz

Smoky Quartz (SiO ₂)

Moonstone (specifically Rainbow Moonstone / White Labradorite)

White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)

Quartz Pebble

Silicon Dioxide (SiO2)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Banded Agate (Chert/Chaldcedony)

Silicon Dioxide (SiO₂)

Green Fluorite

Calcium Fluoride (CaF2)

Tree Agate (or Moss Agate), faceted into a crystal tower

Dendritic Agate (Silicon Dioxide, SiO2)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Banded Agate / Chalcedony

Silicon Dioxide (SiO2) with trace impurities

Garnet (likely Almandine)

Almandine (Fe3Al2(SiO4)3)

Caliche (also known as hardpan, calcrete, kankar)

Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.

Raw Emerald in Schist Matrix

Beryl (Be3Al2Si6O18) in Mica Schist

Quartzite

Quartzite (primarily SiO2)

Banded Quartz

Silicon Dioxide (SiO2)

River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)

Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite

Granite (Felsic Plutonic Rock)

Tiger's Eye (Rough)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Jasper and Aquamarine (likely)

Jasper (Cryptocrystalline Quartz (SiO2)), Aquamarine (Beryl (Be3Al2Si6O18))

Chert (specifically River Stone / Jasper variety)

Microcrystalline Quartz (SiO2)

Aventurine

Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

Quartzite (River Siltstone variety)

Quartzite (SiO2)