Man Made Mineral Simulant (Glass)

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

Crushed Stone (Likely Limestone or Granite)

Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Ferrous Slag

Iron/Steel Slag (Complex Calcium-Alumino-Silicates)

Diamond (or diamond simulant)

C

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Dyed Agate

Chalcedony (SiO2)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)

Slag

Anthropogenic Vitreous Silica/Iron oxides

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Concrete Rubble with Aggregate

Hardened Portland Cement Paste with Coarse Aggregate

Sandstone Concretion

Sedimentary Clastic Rock (Silicate-rich)

Magnetic Hematite (Man-made)

Iron Oxide (Fe2O3) with Barium-Strontium Ferrite

Goldstone

Not a natural mineral or rock. It is an ornamental glass.

Diamond-set gold ring

Diamond (carbon, C) in a gold alloy setting; the clear center stone may be a diamond or a diamond simulant

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert or Flint)

Concrete

Hydrated Portland Cement Aggregate Composite

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Concretion

Sedimentary Concretion (Ironstone / Calcite Concretion)

Diamond-set gold ring

Diamond (carbon, C) in a gold-alloy setting; the stone may be a diamond or a diamond simulant

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Glass / Silicon Dioxide (Man-made)

SiO2 (Amorphous Silicon Dioxide)

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Sandstone Concretion

Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)

Painted River Rock

Artificially Coated Sedimentary Rock

Cullet (Slag Glass)

Amorphous Silica (Industrial byproduct)

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Possible obsidian or slag glass

Volcanic glass, primarily SiO₂; alternatively industrial iron-rich glassy slag

Slag Glass (Leland Blue variant)

Anthropogenic Vitreous Silicate

Ferro-silicate Slag

Industrial Vitrified Slag (High-silica amorphous glass)

Blue opal heart cabochon

Common opal, hydrated amorphous silica (SiO₂·nH₂O), likely blue-dyed or synthetic opalite

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass