Sedimentary Or Igneous Fragment

Black Onyx

Silicon Dioxide (SiO2)

Basalt

Basalt

Granodiorite / Granite (Weathered)

Granodiorite

Granite

Granite (Mainly Quartz, Feldspar, and Mica)

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

Sodalite

Na8(Al6Si6O24)Cl2

Yellow Agate

Silicon Dioxide (SiO2)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Sodalite

Na8(Al6Si6O24)Cl2

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Citrine or Smoky variant)

Silicon Dioxide (SiO2)

Citrine

Silicon dioxide (SiO2)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Orthoclase Feldspar with Quartz

Orthoclase (KAlSi3O8)

Unknown Rock Specimen

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions

Garnet

Garnet Group (Silicate Minerals)

Granite Pebble

Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)

Citrine

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Labradorite

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2)

Quartz (Variety: Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Basalt

Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)

Clear Quartz Point

Silicon Dioxide (SiO2)

Biotite / Black Mica

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

Biotite (Mica)

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

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Quartz

Silicon Dioxide (SiO2)

Pyrope Garnet

Magnesium aluminum silicate (Mg3Al2Si3O12)

Anyolite (Ruby in Zoisite)

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

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Peridot

Olivine ((Mg, Fe)2SiO4)

Banded Agate

Agate (Silicon Dioxide - SiO2)

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]