Organic Gemstone (Fossilized Resin)

Amazonite

Microcline (KAlSi3O8) with trace lead (Pb) impurities

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Clear Quartz

Silicon Dioxide (SiO2)

Amethyst (Cabochon)

Silicon Dioxide (SiO2) with iron impurities

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Amazonite

Amazonite (K(AlSi3O8))

Sunstone

Oligoclase (Plagioclase Feldspar) with inclusions - (Ca, Na)((Al, Si)4O8)

Turquoise (set in silver jewelry)

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Peridot

Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4

Chert (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Jasper

Silicon dioxide (SiO2)

Diamond (or Diamond Simulant)

Carbon (C)

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Amethyst

Amethyst (Purple Quartz); formula: SiO2 (Silicon Dioxide)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Sunstone

Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2

Unakite

Epidotized Granite

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Moonstone (Variety of Orthoclase Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Unakite (Epidotized Granite)

Epidotized Granite

Aquamarine

Beryl (Be3Al2Si6O18 with trace Fe2+)

Red Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)

Rhodonite

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

White Topaz

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

Fuchsite (Green Muscovite in Quartz)

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

Opal

Hydrated amorphous form of silica (SiO2·nH2O)

Howlite (White Buffalo Turquoise)

Howlite (Calcium Borosilicate Hydroxide), Ca2B5SiO9(OH)5

Rhodochrosite

Manganese Carbonate (MnCO3)

Carnelian (a variety of Chalcedony)

Silicon dioxide (SiO2) with iron oxide impurities

Green Aventurine

Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Amethyst (Quartz Variety)

Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)

Rhodonite

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

Rough Green Beryl (Emerald variety)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Sunstone

Oligoclase or Andesine (Labradorite) Feldspar (Na,Ca)(Si,Al)4O8

Rough Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Lapis Lazuli

Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Peridot

Olivine ((Mg, Fe)2SiO4)

Pegmatite

Granitic Pegmatite