Mineral (Treated)

Turquoise

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

Sandstone (Ferruginous)

Arenite (Siliclastic Sedimentary Rock)

Quartz (Milky or Iron-Stained)

Silicon Dioxide (SiO2)

Sandstone (likely Iron-rich or Arkosic)

Arenite (SiO2 with FeO(OH) or Fe2O3 staining)

Green Sandstone

Glauconitic Sandstone

Sandstone

Arenite (primarily SiO2)

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Milky Quartz

Silicon Dioxide (SiO2)

Rhodonite

(Mn,Fe,Mg,Ca)SiO3

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Chert Conglomerate (or Breccia)

Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)

Snowflake Obsidian

Volcanic Glass with Spherulitic Cristobalite (SiO2)

Iron-Stained Quartz (Riverside Cobble)

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Sandstone (Quartz Arenite)

Sandstone (SiO2 with possible mineral cements)

Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)

Recrystallized Calcite (CaCO3)

Amazonite

K(AlSi3O8) - Microcline

Diamond Drill Core (Greenschist and Quartzite)

Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)

Green Apophyllite and Stilbite on Quartz Cluster

Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)

Malachite

Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)

Granite

Phaneritic Igneous Rock (composed mostly of Quartz, Feldspar, and Mica)

Banded Gneiss

Gneiss

Granite

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Peach Aventurine

Silicon Dioxide (SiO2) with inclusions

Quartz (Milk Quartz Cobble)

Silicon Dioxide (SiO2)

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Chert (with Quartz vein/coating)

Microcrystalline Quartz (SiO2)

Basalt Porphyry

Porphyritic Basalt

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Shale with Iron Oxide Staining

Fissile Mudstone (primarily clay minerals and quartz)

Rutilated Quartz (with Garnet pendant)

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Wishing Stone (Basalt or Siltstone with Quartz/Calcite Vein)

Basalt (SiO2+MgO+FeO) or Siltstone with a Quartz (SiO2) or Calcite (CaCO3) vein

Arfvedsonite (often mistakenly sold as Astrophyllite)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Sandstone (Quartzose Sandstone)

Arenite

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite and Calcite inclusions

Quartz Druzy on Matrix (likely Agate or Jasper)

Silicon Dioxide (SiO2) with various mineral inclusions

Quartz with Inclusions

Silicon Dioxide (SiO2) with various mineral inclusions

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Graphite

Graphite (Native Carbon, C)

Quartz Pebble

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)