Mineral (Evaporite)

Basalt with Epidote (Flowerstone-like texture)

Amygdaloidal Basalt (silicate mineral inclusions)

Conglomerate

Conglomerate

Chalcopyrite

Chalcopyrite (CuFeS2)

Quartz with Arsenopyrite

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

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)

Azurite and Malachite on Matrix

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

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Turquoise

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

Chalcedony (Botryoidal/Drusy Quartz)

Silicon Dioxide (SiO₂)

Celestine (or Celestite)

Strontium sulfate (SrSO4)

Tiger's Eye

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

Hematite

Iron(III) oxide (Fe2O3)

Dalmatian Stone

Peralkaline rhyolite

Druzy Quartz

Crystalline Silicon Dioxide (SiO2)

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)

Ruby in Kyanite

Corundum in Disthene (Al2SiO5 + Al2O3)

Fluorite (Green)

Calcium Fluoride (CaF2)

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz pebble

Silicon Dioxide (SiO2)

Limonite (Ironstone Concretion)

Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

Basalt with Quartz Vein

Basalt (SiO2 vein inclusion)

Green Fluorite

Calcium Fluoride (CaF2)

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Red Jasper

Jasper (Silicate mineral - SiO2)