Mineral Based Alloy (Anthropogenic)

Epidote (likely Unakite component or Epidosite)

Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))

Granite

Granite (phaneritic intrusive felsic igneous rock)

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Bronzite

Enstatite (var. Bronzite), (Mg,Fe)SiO3

Limestone Breccia

Sedimentary Breccia (Calcareous)

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Schist with Biotite and Quartz

Biotite-Quartz Schist (Fe,Mg,Al silicate mix)

Lepidolite

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

Ferruginous Sandstone (with possible Epidote/Chlorite coloring)

Sandstone (SiO2 dominated with Fe2O3 staining)

Chalcedony (Botryoidal)

Silicon Dioxide (SiO2)

Heat-Treated Citrine (Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Moss Agate

Silicon dioxide (SiO2) with inclusions of hornblende or chlorite

Biotite (Mica)

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

Emerald

Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium

Mica Schist

Schist (primarily Muscovite and Biotite mica)

Sandstone

Arenite (SiO2 principal)

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Granite Pebble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Granite

Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Granite

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)

Shale

Argillite / Shale

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Schist

Mica Schist

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Iron Oxide cement)

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Granitic Sand

Detrital sediment (predominantly Quartz, Feldspar, and Mica)

Lepidolite

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

Garden Quartz

Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Greenstone or Chlorite Schist

Greenschist / Chlorite schist

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

White Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Biotite on Quartz

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

Druzy Quartz (on Chalcedony/Agate base)

Silicon Dioxide (SiO2)

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Lepidolite

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

Dalmatian Jasper

Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz with Limonite/Goethite staining)