Not A Rock (Man Made Industrial Metal)

Granite

Plutonic Igneous Rock

Red garnet cabochon pendant

Likely almandine garnet, iron-rich garnet-group silicate (often approximated as Fe₃Al₂(SiO₄)₃); identification from the image is uncertain.

Granite

Intrusive Igneous Rock

Peridot ring

Gem-quality olivine, typically forsterite–fayalite solid solution ((Mg,Fe)₂SiO₄)

Blue-green gemstone ring, likely treated turquoise or synthetic/treated beryl

Indeterminate from image; possibilities include turquoise (CuAl6(PO4)4(OH)8·4H2O), apatite, or treated beryl

Green calcite (likely)

Calcite — calcium carbonate, CaCO₃

Pegmatite (Granitic Pegmatite with Quartz and Feldspar)

Intrusive Igneous Rock (Granitic Pegmatite)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Quartz–pyrite-bearing vein rock, possibly gold-bearing

Quartz (SiO₂) with iron sulfides, chiefly pyrite (FeS₂), in altered host rock

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Fired Clay Brick (Anthropic Rock substitute)

Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)

Yellow Sapphire (Raw)

Corundum (Al2O3)

Quartzite

Quartzite (SiO2)

Red garnet cabochon-style earrings

Likely almandine garnet (Fe₃Al₂(SiO₄)₃); the image alone cannot confirm the stone or whether it is natural or synthetic.

Iron-rich meteorite candidate (possibly stony-iron or iron meteorite)

Unclassified meteoritic material; likely Fe–Ni metal with weathering oxides

Granite

Granite (Intrusive Igneous Rock)

Vesicular basalt (likely scoria)

Basaltic scoria; predominantly plagioclase, pyroxene, and olivine in a mafic volcanic glass/microcrystalline matrix

Slag

Ferrous slag (by-product of iron smelting)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Red garnet-like faceted pendant

Possibly almandine garnet, Fe₃Al₂(SiO₄)₃; identification is uncertain from the image

Likely iron meteorite

Iron meteorite, predominantly kamacite and taenite (Fe–Ni alloys)

Diamond

Carbon (C)

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Sea Glass (Teal/Turquoise)

Amorphous Silica (SiO2) with trace metal oxides

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Diamond and Gold Jewelry

Carbon (Diamond) / Au (Gold)

Iron meteorite (probable)

Iron–nickel meteorite, mainly kamacite and taenite (Fe–Ni alloy)

Granite

Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Ruby (mounted cabochon)

Corundum, Al₂O₃; red color typically from chromium

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Granite

Intrusive Igneous Rock

Bauxite

Al2O3·2H2O (Aluminum Hydroxide)

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)

Polished hematite bead (probable)

Hematite, Fe₂O₃

Epithermal Gold Ore (in Quartz/Rhyolite matrix)

Auriferous Quartz (Au + SiO2)

Diamond in Kimberlite

Diamond (C in Kimberlite)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Mixed gemstone bead bracelet

Likely rose quartz, amethyst, and possibly rhodonite or lepidolite beads

Quartzite

Quartzite (SiO2)

Quartzite River Cobble

Quartzite (primarily SiO2)