Synthetic Material (Not A Rock Or Mineral)

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Rutilated Quartz

SiO2 with TiO2 inclusions (Rutile)

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Sapphire (Blue)

Corundum (Al2O3)

White Sapphire

Corundum (Al2O3)

Emerald

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

Ruby (or potential synthetic/imitation)

Corundum (Al2O3)

Assorted gemstone jewelry

Mixed natural and synthetic gemstone cabochons and faceted stones; individual species cannot be determined reliably from this image

Blue quartz crystal (likely synthetic or coated quartz)

Quartz, silicon dioxide (SiO₂); possible aqua-aura quartz

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Diamond

Carbon (C)

Ruby

Corundum (Al2O3 with Chromium traces)

Corundum (variety Ruby/Sapphire)

Aluminum Oxide (Al2O3)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Sandstone

Arenite

Sandstone

Arenite (primarily SiO2)

Likely bituminous coal

Coal, predominantly carbon-rich organic matter; exact rank cannot be confirmed from the image

Gravel or Crushed Stone

Fragmented Aggregate Stone

Yellow faceted gemstone, likely citrine or yellow beryl

Quartz (SiO₂), if citrine; beryl (Be₃Al₂Si₆O₁₈), if heliodor

Sandstone

Arenite (SiO2 with various cementing minerals)

Weathered iron-rich rock, possibly limonite-bearing basalt or laterite

Indeterminate; likely Fe-oxide/hydroxide–altered mafic rock, dominated by limonite/goethite with silicate minerals

Quartz with Sericite and Cinnabar

Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)

Black cabochon pendant, likely onyx or black glass

Most likely black chalcedony (microcrystalline quartz, SiO₂); the surrounding stones may be cubic zirconia or glass

Blue faceted gemstone, likely sapphire

Corundum (Al₂O₃), likely blue sapphire; identity cannot be confirmed from the photograph alone

Rose Quartz

Silicon Dioxide (SiO2)

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Sandstone (with potentially high Feldspar/Arkose content)

Clastic sedimentary rock (SiO2 dominated)

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

Blue aventurine quartz (likely)

Quartz, silicon dioxide (SiO₂), probably blue aventurine variety

Tumbled leopard-skin jasper (probable)

Orbicular rhyolite/jasper; primarily microcrystalline quartz (SiO₂) with feldspar and iron-oxide inclusions

Dendritic jasper/chalcedony

Silica-rich microcrystalline quartz (SiO₂) with manganese-oxide dendrites

Sandstone Pebble

Sandstone (primarily SiO2)

Quartz Vein in Siltstone

SiO2 (Quartz) on clastic sedimentary matrix

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Sandstone

Sedimentary Clastic Rock

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

N/A - Image is non-geological

Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)

Ametrine

SiO2 (Silicon Dioxide with iron impurities)

Blue cabochon ring stone, likely sapphire or synthetic blue corundum

Corundum (Al₂O₃), possibly chromium/iron-titanium-bearing sapphire