Mineral Based Human Made Alloy

Rainbow Moonstone with Black Tourmaline

White Labradorite with Schorl (Na,Ca)(Al,Si)4O8

Rhodonite

Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3

Moss Agate and Hematite

Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)

Smoky Quartz

Smoky Quartz (SiO2)

Chert (Flint variety)

Silicon Dioxide (SiO2)

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Basalt with Quartz/Calcite matrix

Basalt (SiO2 with Ca/Mg/Fe silicates) on a Mineral Matrix

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Lepidolite

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

Gold-bearing Quartz with Iron Oxides

Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)

Lepidolite (in Quartz Matrix)

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

Granite

Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8, and Mica)

Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)

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

Emerald

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Lepidolite with Rubellite Tourmaline

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

Fuchsite

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

Graphite

Graphite (Native Carbon, C)

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Graphite

Graphite (C)

Blue Lepidolite

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

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Granite

Plutonic felsic rock (Quartz, Feldspar, Mica)

Basalt with Epidote/Chlorite

Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))

Schist (Micaceous)

Mica Schist

Limestone (Ocherous)

Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

Gneiss

Gneiss

Banded Gneiss

Gneiss (Metamorphic Rock)

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite (River-worn Cobble)

Phaneritic Felsic Igneous Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Graphite

Graphite (Native Carbon, C)

Bloodstone (Heliotrope)

Silicon dioxide (SiO2) with Hematite inclusions

Flower Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Jasper

Silicon dioxide (SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)