Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)

Quartz (Milky or Cloudy variety)

Quartz (Silicon Dioxide, SiO2)

Peacock Ore

Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)

Schist (Greenschist / Mica Schist)

Metamorphic rock rich in platy minerals (e.g., Chlorite/Mica schist)

Sapphire

Corundum (Al2O3)

Pumice (Basaltic/Scoria)

Vesicular Basalt / Scoria

Garnet

Garnet group [X3Y2(SiO4)3]

Milky Quartz

Silicon Dioxide (SiO2)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Pyrite-bearing Schist

Pyritic Quartz-Mica Schist with FeS2 inclusion

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Crushed Stone / Gravel (Multiple Rock Types)

Lithic fragments (undifferentiated)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Diorite

Intermediate Phaneritic Igneous Rock

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble with Chert

Silicon Dioxide (SiO2)

Garnet

Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

Osumilite in Granite Matrix

(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30

Ruby (Raw Corundum)

Corundum (Al2O3 with Chromium impurities)

Diorite

Diorite (intermediate intrusive igneous rock)

Schist (Chlorite or Mica-rich)

Chlorite Schist

Ruby (Raw Corundum)

Corundum (Al2O3:Cr)

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Chinese Writing Stone

Porphyritic Basalt or Andesite with Feldspar phenocrysts (likely Orthoclase or Plagioclase)

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Feldspar (Orthoclase / Microcline) with Quartz

KAlSi3O8 (Potassium Feldspar / Orthoclase)

Quartzite

Quartzite (SiO2)

Strawberry Quartz (Quartz with Hematite inclusions)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite)

Calcium Fluoride (CaF2)

Milky quartz (likely quartz-rich rock)

Quartz, silicon dioxide (SiO₂)

Garnet Rhyolite

Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet

Orange Calcite

Calcium Carbonate (CaCO3)

Almandine Garnet

Fe3Al2(SiO4)3

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Agate

Silicon dioxide (Chalcedony), SiO2

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Botryoidal Chalcedony (Agate)

Silicon Dioxide (SiO2)

Ironstone Concretion / Limonite Node

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O) with Goethite/Hematite

Quartz Pebble

Silicon Dioxide (SiO2)