Mineral (Processed Alloy)

Sapphirine in Matrix

Sapphirine (Mg,Al)8(Al,Si)6O20

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)

River Stone / Pebble

Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Pink Tourmaline in Quartz Matrix

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions

Rainbow Moonstone with Black Tourmaline

White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Petrified Wood

Silicified Wood (SiO2)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Tiger's Eye (dark/grey variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Tiger's Eye

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Fossil Shark Tooth

Carcharodon or Carcharias fossil (Vertebrate Fossil)

Mixed Gemstone Collection

SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)

Granite

Granite (Felsic Plutonic Rock)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Rhodonite

Rhodonite (Mn2+SiO3)

Quartz Pebble

Silicon Dioxide (SiO2)

Greasy Quartz (likely carved Milky Quartz or Aventurine)

Silicon Dioxide (SiO2)

Vesicular Basalt (Iron-Stained)

Mafic Volcanic Rock (Basalt)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Banded Agate

Cryptocrystalline Quartz (SiO2)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Snowflake Obsidian

Spherulitic Obsidian (primarily SiO2 with Cristobalite inclusions)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Ferruginous Quartz (Hematoid Quartz)

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Green Calcite

Calcium Carbonate (CaCO3)

Black Tourmaline

Schorl (Na(Fe2+)_{3}Al_{6} (BO_{3})_{3} (Si_{6}O_{18})(OH)_{4})

Petrified Wood

Silicified Wood / Chalcedony (SiO2)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Lepidolite

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

Black Tourmaline in Quartz

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)

Ferruginous Sandstone

Ferruginous Clastic Sedimentary Rock

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)