Mineral (Metamorphic Pseudomorph)

Mica in Quartz Host

Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)

Clear Quartz Fragment

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Lapis Lazuli (Low-grade/Calcite-heavy)

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite component)

Gneiss (Metamorphic Cobble)

Gneiss

Unakite

Epidotized Granite

Sodalite (blue beads) and Clear Quartz (clear beads)

Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2

Magnetite (potentially Hematite-rich)

Magnetite (Fe3O4)

Fulgurite

Fulgurite (Lechatelierite-rich variety)

Charoite

K(Ca,Na)2Si4O10(OH,F)·H2O

Anyolite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Milky Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Nuummite

Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions

Blue Quartzite

Quartzite (primarily SiO2 with inclusions like Dumortierite or Magnesio-riebeckite)

Gneiss (specifically a Granitic Gneiss specimen)

Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)

Marble

Marbles are primarily composed of calcite (calcium carbonate, CaCO3) or dolomite (calcium magnesium carbonate, CaMg(CO3)2).

Almandine Garnet in Matrix

Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Ruby in Zoisite

Anyolite (combination of Ca2Al3(SiO4)3(OH) and Al2O3:Cr)

Magnetite (likely in Hematite or Ironstone)

Magnetite (Fe3O4)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions

Quartz (Granular Milky Quartz fragment)

Silicon Dioxide (SiO2)

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Ruby (Corundum)

Aluminum Oxide (Al2O3) with Chromium traces

Clear Quartz

Silicon Dioxide (SiO2)

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Ruby

Corundum (Al2O3 with Chromium traces)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Black Tourmaline

Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4

Quartz (Milky/Common)

Silicon Dioxide (SiO2)