Synthetic (Not A Rock Or Mineral)

Tumbled sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Vesicular basalt (likely weathered volcanic scoria)

Basaltic scoria; primarily plagioclase, pyroxene, and olivine

Carved yellow stone butterfly

Undetermined; possibly carved soapstone (talc-rich rock) or another soft ornamental stone

Lapis Lazuli

Lazurite-dominant metamorphic rock, Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Silicon Carbide (Carborundum)

Moissanite (SiC)

Pink Sapphire

Corundum (Al2O3 with trace Chromium and Iron)

Possible weathered iron-rich rock or breccia

Indeterminate; likely iron-oxide-stained silicate rock, possibly basaltic breccia or limonite-bearing material

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium Dioxide (ZrO2)

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

Dyed Agate

Agate (Cryptocrystalline Quartz), SiO2

Pink granite

Granitic rock, chiefly quartz, alkali feldspar, plagioclase, and biotite/hornblende

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.

Rounded pink granite cobble

Granite, chiefly quartz–alkali feldspar–plagioclase–biotite

Bauxite

Bauxite (principal ore of aluminum, primarily Al(OH)3)

Opal ring

Precious opal, hydrated amorphous silica (SiO₂·nH₂O), set in a metal ring

N/A (Non-Geological Specimen)

Dark speckled granite pebble

Granite, a quartz–feldspar–mica plutonic rock

Goldstone

Aventurine Glass (Man-made)

Faceted clear gemstone in a metal setting

Unidentified transparent faceted gem; possibilities include quartz (SiO₂), topaz (Al₂SiO₄(F,OH)₂), or glass—the image is insufficient for identification.

Fossil tooth, likely shark tooth

Likely fossilized shark tooth (possibly a small lamniform shark; exact taxon cannot be confirmed from the image)

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

Amethyst quartz cluster

Quartz, SiO₂; purple variety amethyst

Opal ring (likely precious opal)

Hydrated amorphous silica, SiO₂·nH₂O; the pictured stone may be natural opal or a lab-created/imitation opal

Ruby

Corundum (Al2O3)

Small clear faceted gemstone, possibly cubic zirconia

Unconfirmed; cubic zirconia (ZrO₂) is a possibility, but diamond or another colorless stone cannot be identified from this image alone

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Raw ruby (corundum)

Ruby variety of corundum, aluminum oxide (Al₂O₃), colored chiefly by chromium

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Weathered feldspar-rich pegmatite or granite outcrop

Quartz–feldspar granitoid, likely containing potassium feldspar (KAlSi₃O₈) and quartz (SiO₂)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Opalite

Synthetic glass / Opaque silicious glass

Lapis Lazuli

Lazurite-dominant Metamorphic Rock (complex aluminosilicate)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Weathered granitic rock fragment

Granite, likely quartz–feldspar–biotite aggregate

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Weathered granite or granitic gneiss pebble

Granite: quartz + feldspar + mica; possibly weakly foliated gneiss

Likely quartz-bearing rock or mineral fragment

Probable quartz (SiO₂), possibly a weathered pegmatite or chalcedony fragment

Likely quartz-rich rock or mineral fragment

Quartz (SiO₂), possibly in a pegmatitic or granitic matrix