Mineral (Silicate Variety)

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with hematite/limonite inclusions

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Aquamarine

Beryl (Be3Al2Si6O18 with Iron traces)

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Common Opal

Hydrated silica (SiO2 " nH2O)

Diorite

Phaneritic intermediate plutonic rock

Pallasite Meteorite (likely Imilac or Brenham)

Stony-Iron Meteorite (Pallasite)

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Coprolite

Fossilized feces (various taxa)

Ferruginous Sandstone

Arenite with Iron Oxide cement (Fe2O3 / FeO(OH))

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Fossilized Coprolite

Coprolite (fossilized feces)

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)

Diorite (Salt and Pepper Rock)

Diorite

Emerald in Matrix (Quartz/Schist)

Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities

Obsidian

Obsidian (Volcanic Glass, complex silicate)

Serpentinite

Serpentinite (Hydrated Magnesium Silicate Mg3Si2O5(OH)4)

Bauxite

Bauxite (Al2O3·nH2O)

Amazonite

Potassium aluminum silicate (Microcline); KAlSi3O8

Marble

Recrystallized Calcite (CaCO3)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Diorite (Spotted)

Diorite (Intrusive igneous rock)

Kyanite (within Quartz)

Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)

Moonstone

Orthoclase (Potassium aluminum silicate - KAlSi3O8)

Greenstone / Serpentinite

Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn silicate minerals including Antigorite, Lizardite, and Chrysotile)

Red Ochre (Hematite-rich Clay)

Limonitic/Hematitic Claystone (Fe2O3 with clay minerals)

Kambaba Jasper (Crocodile Jasper)

Stromatolitic Rhyolite/Jasper (SiO2)

Kaolinite Claystone

Al2Si2O5(OH)4 (Kaolinite)

Glauconitic Sandstone

Glauconitic Quartz Arenite

Sandstone Concretion

Sedimentary Clastic Rock (Silicate-rich)

Moonstone

Orthoclase (Potassium aluminum silicate - KAlSi3O8)

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate

Diorite

Intermediate plutonic igneous rock

Banded Gneiss

Gneiss (Metamorphic silicate rock)

Native Copper with Malachite and Chrysocolla

Native Copper (Cu) with Malachite [Cu2CO3(OH)2] and Chrysocolla [(Cu,Al)2H2Si2O5(OH)4·nH2O]

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)

Ruby in Zoisite (Anyolite)

Anyolite (Combination of Corundum and Zoisite)

Iolite (Cordierite)

Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)