This Image Does Not Display A Rock, Mineral, Or Geological Specimen. It Shows A Human Hand Wearing A Ring.

N/A

Not a rock, mineral, or geological specimen

Gold (Elemental Metal)

Gold (Au)

Diamond-set gold ring or ring component

Diamond (crystalline carbon, C); gold alloy setting (Au)

Reddish-brown rock fragment, possibly iron-stained sandstone

Unidentified iron-oxide-stained rock; sandstone is a tentative visual identification

Blue-stone and diamond ring

Blue stone is possibly blue sapphire (corundum, Al₂O₃); surrounding stones appear to be diamonds (carbon, C).

Multi-stone gemstone ring

Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy

Note: No specimen visible

Weathered concrete or cementitious slab (not natural rock)

Artificial calcium-silicate cement composite; likely Portland cement concrete

Unidentified gray stone/concrete-like fragment

Indeterminate; likely a fine-grained carbonate or cementitious geological fragment

Gem-set gold ring

Likely a faceted diamond (carbon, C) set in a gold-alloy ring; the surrounding stones are not identifiable from the image.

Dark green cabochon gemstone ring

Unknown; possibly green onyx (cryptocrystalline quartz, SiO₂) or another green gem

Gem-set gold ring

Gold alloy setting with a colorless faceted gemstone, possibly quartz or glass; the stone cannot be identified reliably from the image

Diamond-set gold ring

Diamond (crystalline carbon, C) in a gold alloy setting

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Gold-colored gemstone ring, likely citrine or glass imitation

Indeterminate from image; possible quartz (SiO₂) or yellow glass set in gold-colored metal

Unable to identify - Image contains non-geological items

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Exposed shoreline bedrock and sediment

Unidentified natural rock; the image does not show enough detail for a specific geological identification

Assorted rock and mineral specimens

Multiple unidentified specimens; individual mineral and rock names cannot be determined from this image

Diamond ring

Diamond (crystalline carbon, C) set in a metal ring; the small stones appear diamond-like but cannot be confirmed from the image.

Amber-set ring

Amber (fossilized plant resin; organic mineraloid), set in a metal ring

Likely polished dark stone (identity uncertain)

Undetermined; possibly polished basalt, chert, or another dark silicate rock

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Tumbled purple stone, possibly lepidolite-bearing rock or dyed quartzite

Uncertain from image; possible quartz (SiO₂) with purple mica, or artificially dyed silicate

Crushed stone aggregate

Mixed lithic aggregate; individual fragments cannot be identified from the image

Road-surface aggregate (crushed stone)

Unidentifiable mixed lithic aggregate; likely basaltic/andesitic fragments with feldspar, quartz, and weathered rock

N/A - Image does not contain a rock or mineral

Anthropogenic textile material

Diamond ring (likely diamond with gold band)

Diamond, crystalline carbon (C); band appears gold alloy

Green gemstone ring (likely synthetic or imitation emerald)

Possibly emerald, beryl (Be₃Al₂Si₆O₁₈); the photo cannot confirm the center stone’s identity or whether it is natural.

Gold ring with a dark, possibly gemstone setting

Gold alloy; the dark setting is not identifiable from the image

Small pale mineral fragment, possibly calcite

Unidentified; calcite (CaCO₃) is one possibility

Clear faceted gemstone in an ornate ring (likely quartz or glass imitation)

Unidentified colorless faceted stone; visual identification is inconclusive

Unidentified rough rock fragment

Indeterminate; no diagnostic mineral or texture can be confirmed from the image

Green cabochon ring stone (likely dyed jade, aventurine, or glass imitation)

Undetermined; possible nephrite jade (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂), jadeite (NaAlSi₂O₆), or green aventurine quartz

Rough pale-green mineral specimen, likely fluorite

Fluorite (CaF₂), tentative visual identification

Milky quartz in iron-stained host rock

Quartz (SiO₂), likely with iron-oxide staining; host rock is uncertain from the photo

Tumbled honey calcite (probable)

Calcite — calcium carbonate, CaCO₃

Blue cabochon gemstone ring

Likely blue turquoise, glass-filled sapphire, or blue spinel; exact identification requires testing

Gold ring with a clear faceted gemstone

Likely colorless diamond (carbon, C); identification from the image is uncertain

Quartz crystal cluster on matrix

Quartz (SiO₂), likely a drusy quartz coating on an unidentified rock matrix

Likely polished dark gemstone cabochon

Indeterminate; possibly black chalcedony/agate, obsidian, or glass imitation