Metamorphic Rock (Composed Of Multiple Minerals)

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granite

Granite (a common term for a felsic intrusive igneous rock)

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica (Golden/Yellow variety)

KAl2(AlSi3O10)(F,OH)2

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Ruby in Zoisite (Anyolite)

Anyolite (Combination of Corundum and Zoisite)

Sandstone (likely Ferruginous)

Arenite (SiO2 with iron oxide impurities)

Milky Quartz

Silicon Dioxide (SiO2)

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))

Magnetite

Magnetite (Fe3O4)

Schist

Mica Schist

Serpentine

Serpentinite (group of minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Tiger's Eye

Pseudomorph of Crocidolite (SiO2 with iron oxides)

Gemstone Sand (Mineral Assortment)

Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

White Marble

Recrystallized Calcite (CaCO3)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Chatoyant Quartz (Cat's Eye Quartz)

Silicon Dioxide (SiO2) with fibrous inclusions of Amphibole or Rutile

Quartz

Silicon Dioxide (SiO2)

Limonite (Iron Ore)

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

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Grey Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Labradorite

(Ca, Na)(Al, Si)4O8

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granitic Pegmatite (River Rock specimen)

Granite / Pegmatite (composed of SiO2, KAlSi3O8, and NaAlSi3O8)

Basalt

Mafic Volcanic Rock (composed mainly of Plagioclase, Pyroxene, and Olivine)

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Granatic Pegmatite

Pegmatitic Granite

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Greenstone

Greenschist / Greenstone (contains epidote, chlorite, and actinolite)

Unakite

Unakite (an altered granite composed of Epidote, Orthoclase, and Quartz)

Unakite or Epidosite

Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)

Clear Quartz

Silicon Dioxide (SiO2)

Blue Quartz

Quartz (Silicon Dioxide) with blue inclusions (SiO2)

Basalt

Extrusive Mafic Igneous Rock (composed primarily of Plagioclase, Pyroxene, and Olivine)

Granodiorite

Granodiorite (calc-alkaline phaneritic igneous rock)