Mineral (Synthetic)

Turquoise (possible Dyed Howlite or Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Turquoise)

Ferruginous Quartz (Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Turquoise

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

Azurite with Malachite and Limonite

Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2

Turquoise

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

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Turquoise

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

Limonite

Limonite (Hydrous iron oxides, FeO(OH)·nH2O)

Quartz Vein in Host Rock (Gneiss/Schist)

Silicon Dioxide (SiO2) within a metamorphic matrix

Red Sandstone

Arenite (with Iron Oxide cement)

Sandstone with Iron Oxide (Limonite/Hematite)

Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)

Moonstone

Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8

Lapis Lazuli

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

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

Lepidolite with Quartz

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

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Granite Pebble (Salt and Pepper Granite)

Felsic Intrusive Igneous Rock (Granite)

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Basalt with Epidote (Flowerstone-like texture)

Amygdaloidal Basalt (silicate mineral inclusions)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sardonyx Agate Sphere

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Turquoise (set in silver jewelry)

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

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Azurite and Malachite on Matrix

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Turquoise

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

Chalcopyrite

Chalcopyrite (CuFeS2)

Quartz with Arsenopyrite

Silicon Dioxide (SiO2) with Iron Arsenic Sulfide (FeAsS)

Conglomerate

Conglomerate

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Hematite

Iron(III) oxide (Fe2O3)

Dalmatian Stone

Peralkaline rhyolite

Lapis Lazuli (polished cabochon)

Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)

Bauxite

Bauxite (Al2O3·2H2O)

Lepidolite

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

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within a metamorphic matrix

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)