Synthetic (Not A Natural Rock)

Aquamarine in Onyx / Blue Topaz Pendant

Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Dyed Purple Agate Sliced Tablet

Silicon Dioxide (SiO2), variety Chalcedony

Ametrine

Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)

Emerald

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

Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate

Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Bismuth

Bismuth (Bi)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

The user-provided image does not contain a rock or mineral specimen

Opalite

Synthetic Glass / Man-made Opal Simulant

Blue Sapphire

Corundum (Al2O3)

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Note on Image Identification: Textile

N/A (Anthropogenic material)

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Opal Inlay (Simulated/Lab-created)

Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin

Blue Sapphire (in a faceted jewelry setting)

Corundum (Al2O3) with trace Iron and Titanium

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Mystic Topaz

Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)

Smoky Quartz

Silicon Dioxide (SiO2)

Obsidian (black volcanic glass)

Obsidian; predominantly rhyolitic volcanic glass, mainly SiO₂ with minor feldspar, quartz, and iron oxides

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Emerald

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

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Diamond (Faceted)

Carbon (C)

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Sodium Polyacrylate (Superabsorbent Polymer)

Sodium Polyacrylate [-CH2-CH(COONa)-]n

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Smoky Quartz

Silicon Dioxide (SiO2)

Asphalt Concrete (Bituminous Conglomerate)

Anthropogenic Bituminous Conglomerate

Limonite Ironstone

Goethite-Limonite concretion / Iron oxide

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural radiation

Blue Sapphire

Corundum (Al2O3)

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)