Mineral (Treated)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Green Fluorite

Calcium Fluoride (CaF2)

Bauxite

Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Clear Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli

Lazurite-dominant Metamorphic Rock (complex aluminosilicate)

Jet

Lignite (Anthracite-grade compact coal)

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Geode (Water-worn)

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Agatized Petrified Wood

Silicon Dioxide (SiO2) - Chalcedony pseudomorph after Wood

Pyrite

Iron Sulfide (FeS2)

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)

Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Basalt River Stone

Basalt

Granite

Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)

Granite

Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)

Quartzite (Iron-stained)

Quartzite (primarily SiO2)

Granite

Granite (Alkali-feldspar, Quartz, and Plagioclase composition)

Granite

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

River Stone (likely Mudstone or Siltstone)

Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)

Milky Quartz

Quartz (Silica / Silicon Dioxide - SiO2)

Limonite

Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O

Druzy Quartz (on Quartzite or Chert)

Silicon Dioxide (SiO2)

Amazonite

K(AlSi3O8) - Microcline variant

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Limonite (after Pyrite Pseudomorph)

Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Smoky Quartz and Clear Quartz Geode

Silicon Dioxide (SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Rose Quartz

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

Pyrite

Iron Disulfide (FeS2)

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Rose Quartz

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

Rhodonite

Rhodonite (Mn, Fe, Mg, Ca)SiO3