Granite

Schorl (Black Tourmaline)

NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Unakite

Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)

Garnet

Garnet group (X3Y2(SiO4)3)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz (Rose or Clear variety)

Silicon Dioxide (SiO2)

Gneiss

Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)

Green Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Fluorite

Calcium Fluoride (CaF2)

Massive Quartz

Silicon dioxide (SiO2)

Diorite

Diorite (Intermediate intrusive igneous rock)

Diorite

Diorite (Intermediate intrusive igneous rock)

Lepidolite on Pegmatite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Granitic Quartz with Feldspar

Granite (composed primarily of SiO2 and KAlSi3O8)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Granitic Pegmatite

Granite Pegmatite (coarse-grained intrusive igneous rock)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Smoky Quartz on Matrix

Crystalline Silicon Dioxide (SiO2)

Orthoclase Feldspar (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Milky Quartz

Silicon Dioxide (SiO2)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Bull Quartz (White Quartz)

Silicon Dioxide (SiO2)

Asphalt (Bituminous Concrete)

Composite material (bitumen binder with mineral aggregate)

Smoky Quartz

Silicon Dioxide (SiO2) with trace aluminum and irradiation

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) within a resin matrix

Rose Quartz

Silicon Dioxide (SiO2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Lapis Lazuli

Lazurite-dominant metamorphic rock, Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix

NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Rose Quartz

Quartz (SiO2) with trace amounts of Titanium, Iron, or Manganese

White Topaz

Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)

Tourmaline

Complex Borosilicate - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite species)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Mica

Phyllosilicate (group name), typically Muscovite KAl2(AlSi3O10)(OH)2 or Biotite K(Mg,Fe)3(AlSi3O10)(OH)2

Morganite (Pink Beryl)

Beryllium aluminum silicate Be3Al2(SiO3)6

Beryl (Aquamarine variety)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)