Mineral (Native Element Alloy)

White Agate / Chalcedony

Silicon Dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Diamond

Diamond (Pure Carbon, C)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Blue-dyed Quartz Druzy

Silicon Dioxide (SiO2) with artificial pigment

Quartz pebble

Silicon dioxide (SiO2)

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

Pyrite

Iron Sulfide (FeS2)

Diamond (in jewelry setting)

Diamond (Carbon, C)

Pink Tourmaline (Rubellite)

Rb:Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite variety)

Quartz Pebble

Silicon Dioxide (SiO2)

Pyrite

Iron Disulfide (FeS2)

Red Jasper (River pebble)

Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)

White Quartz Sphere

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Magnetite

Magnetite (Fe3O4)

Granitic Pegmatite with Schorl

Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Banded Rock (likely Quartz-rich)

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

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a feldspar mineral (KAlSi3O8 or NaAlSi3O8 respectively, often a mixture)

Green Tourmaline

Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Yellow Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO₂)

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Pink Granite

Phaneritic Felsic Igneous Plutonic Rock

Granite Pebble

Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)

Schist (Garnet-Mica Schist)

Garnet-Mica Schist

Granite

Granite (High-silica plutonic rock)

Chert (often found as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Lazulite

Lazulite (MgAl2(PO4)2(OH)2)

Kunzite

Spodumene, LiAlSi2O6 (variety of spodumene)

Gneiss

Gneiss (High-grade metamorphic rock)

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Quartz Geode (Cracked)

Quartz (Silicon Dioxide, SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Aquamarine with Sunstone

Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Diamond

Diamond (pure Carbon, C)