Igneous, Sedimentary, Or Metamorphic (Mineral Based)

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Vesicular Basalt

Amygdaloidal Basalt (Mafic extrusive volcanic rock)

Vesicular Basalt

Vesicular Basalt (rich in silicate minerals mostly Plagioclase and Pyroxene)

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

K2 Jasper (K2 Granite)

Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)

Sandstone (with minor quartz and possible clay components)

Clastic Sedimentary Rock (SiO2 dominated)

Ruby in Zoisite (Anyolite)

Anyolite (Combination of Corundum and Zoisite)

Labradorite (Feldspar)

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

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Mica Schist

Mica Schist

Citrine Quartz

Silicon Dioxide (SiO2)

Basalt with Quartz/Zeolite Inclusions

Porphyritic Basalt (SiO2 with Aluminosilicates)

Feldspathic Granite (likely Syenite or Granite Pegmatite)

Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Sapphire

Corundum (Al2O3)

Granite Gneiss

Gneiss (high-grade metamorphic rock)

Sandstone

Arenite (primarily SiO2)

Banded Gneiss

Gneiss (pronounced "nice")

Citrine Quartz

Silicon Dioxide (SiO2)

Stichtite in Serpentine (Atlantisite)

Mg6Cr2CO3(OH)16·4H2O (Stichtite) / Mg3Si2O5(OH)4 (Serpentine)

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Schist

Mica Schist (Medium-grade Metamorphic Rock)

Olivine-bearing Basalt / Scoria

Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Granitic Gneiss

Gneiss (Metamorphic rock of granitic composition)

Vesicular Basalt (Lava Rock)

Aphanitic Mafic Igneous Rock

Mica Schist

Mica Schist (Predominantly Muscovite/Biotite)

Green Calcite

Calcium Carbonate (CaCO3)

Citrine

Silicon Dioxide (SiO₂)

Black Tourmaline

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

Amygdaloidal Basalt

Amygdaloidal Basalt

Chlorite Included Quartz

Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Li)6AlSi3O10(OH)8

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz with Chalcopyrite and Pyrite

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

Greenschist

Chlorite schist

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Moonstone (specifically White Moonstone/Adularia)

Potassium aluminum silicate ((K,Na)AlSi3O8)

Blue Sapphire

Corundum (Al2O3 with trace amounts of iron and titanium)