Synthetic (Ceramic)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Moissanite

Silicon Carbide (SiC)

Red cabochon gemstone ring, likely synthetic ruby or red glass

Possibly corundum (Al₂O₃, chromium-colored); identity cannot be confirmed from the image

Mixed tumbled stones, likely rose quartz and purple quartz/amethyst

Quartz (SiO₂), including amethyst and probable rose quartz; exact identification is uncertain from the blurred image

Likely iron-rich meteorite or hematite-rich rock

Uncertain; possible iron meteorite (Fe–Ni alloy) or limonite/goethite-bearing hematite

Unidentified rounded mineral/rock fragment

Indeterminate; likely a weathered quartz-rich stone or iron-stained granite fragment

Small rounded pebble, likely weathered sandstone or iron-stained sedimentary rock

Indeterminate; probable quartz-rich sandstone (SiO₂ with clay/iron-oxide cement)

Hematite

Iron(III) oxide (Fe2O3)

Weathered iron-rich rock fragment

Uncertain; possibly limonite/goethite-bearing ironstone or weathered basalt

Chalcopyrite-bearing Ore

Chalcopyrite (CuFeS2)

Colorless faceted gemstones, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

Blue-violet faceted gemstone, likely amethyst

Quartz (SiO₂), purple variety colored mainly by iron impurities and irradiation

Black onyx or black obsidian bead bracelet

Likely chalcedony (microcrystalline quartz, SiO₂) if onyx; alternatively volcanic glass (obsidian)

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification

Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial dyes

Diamond (or Cubic Zirconia)

Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ

Note: The image provided is a fabric sock, not a geological specimen.

Polyester-Cotton Blend with Elastane

Iron-rich breccia or ironstone

Hematite/goethite-bearing breccia; likely Fe₂O₃–FeO(OH) with silica and iron-stained rock fragments

Pyrite

Iron Sulfide (FeS2)

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Blue Quartz / Glass Gemstone Pendant

SiO2 (Silicon Dioxide) or Synthetic Glass

Opalite

Synthetic glass (SiO2 + metal additions)

Opalite

Synthetic Opalite (Man-made glass)

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Opalite

Synthetic Opalized Glass (SiO2 + additives)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Silicon Carbide (Carborundum)

Moissanite (SiC), though mostly synthetic

Clear Quartz (faceted) / Diamond Simulant

Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)

Blue gemstone ring (likely sapphire)

Likely corundum, Al₂O₃; the dark, reflective appearance may also indicate a treated or synthetic stone.

Likely weathered pebble or mineral fragment

Indeterminate; possibly quartz-rich stone, iron-stained feldspar, or a small chert fragment

Tumbled blue-green stone, possibly aquamarine or chalcedony

Indeterminate from image; possibilities include beryl (Be₃Al₂Si₆O₁₈) or cryptocrystalline quartz (SiO₂)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Lapis Lazuli (Tumbled Stone)

Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (predominantly Lazurite)