Metamorphic Rock (Primarily Composed Of Minerals)

Quartz (Milky/Gray variety)

Silicon Dioxide (SiO2)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Granite

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)

Green Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Blue Sapphire

Corundum (Al2O3)

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Blue Kyanite

Kyanite (Al2SiO5)

Cobaltoan Calcite / Pink Dolomite (Possible)

Cobaltoan Calcite: (Ca,Co)CO3; Pink Dolomite (or Thulite): CaMg(CO3)2 or Mn-Dolomite / (Thulite: Mn2+3Al2(Si2O7)(SiO4)O(OH))

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

Smoky Quartz

SiO2 (Silicon Dioxide)

Banded Agate

Silicon Dioxide (SiO2)

Amethyst

SiO2 (Silicon Dioxide with Iron impurities and natural radiation influence)

Dragon Blood Jasper

Epidote with Red Jasper (SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Mica Schist

Foliated Metamorphic Rock (Schist)

Quartzite (with Iron Staining)

Metamorphosed Quartz Sandstone (SiO2)

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Rhodochrosite in Quartz

Manganese Carbonate (MnCO3)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Prase Quartz on Feldspar

Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)

Quartzite with Chlorite staining

Metamorphic Quartzite (SiO2 with Chlorite inclusions)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Pegmatite

Coarse-grained Igneous Rock (Granitic Pegmatite)

Tumbled Moonstone

Feldspar (Orthoclase/Albite), KAlSi3O8

Milky Quartz Pebbles

Silicon Dioxide (SiO2)

Emerald In Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Ruby

Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Vesicular Basalt (Iron-Stained)

Mafic Volcanic Rock (Basalt)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Granite

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

Vesicular Basalt with Secondary Mineral Infill

Mafic Volcanic Rock (Basalt)

White Quartz

Silicon Dioxide (SiO2)

Petrified Wood

Silicified wood (primarily SiO2)

Blue Aventurine

Silicon Dioxide (SiO2) with inclusions of Dumortierite