Mineral (Man Made Composite)

Aura Quartz / Rainbow Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Raw turquoise-bearing rock

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a limonite/matrix host

Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation

Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass

Moissanite

Silicon Carbide (SiC)

Diamond

Carbon (C)

Polished banded agate slab or agate-look decorative stone

Microcrystalline quartz (chalcedony), SiO₂; exact identification is uncertain from the image

Chalk

Calcium Carbonate (CaCO3)

Diamond

Carbon (C)

Diamond (Colorless/White)

Carbon (C)

Basalt

Extrusive Igneous Rock

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Diamond

Carbon (C)

Diamond (in a jewelry setting)

Carbon (C)

Unakite

Epidotized Granite

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Unakite

Altered Granite (Epidotized Granite)

Tiger Iron

Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)

Marble (Sculpted Statue)

Metamorphic Limestone (composed primarily of Calcite, CaCO3)

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Asphalt (Aggregate)

Bituminous macadam / Concrete Aggregate

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Diamond

Native Carbon (C)

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Granite

Granite (Phaneritic Quartz-Feldspar-Mica composite)

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Chrysocolla Cuprite

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)

Basalt

Basalt

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Diamond (as set in a gold ring)

Carbon (C)

Turquoise

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

Unakite

Altered Granite (Granitic Metamorphic Rock)

Fossil Sea Urchin (Echinoid)

Echinoidea fossil (often replaced by silica or calcite)

Unakite

Unakite (Epidotized Granite)

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Unakite

Epidotized Granite

Rough Diamond

Native Carbon (C)

Diamond (in a cluster setting)

Crystallized Carbon (C)

Basalt

Basalt