Unknown

Painted pebble, likely a smooth river stone

Unidentified fine-grained natural rock; exact lithology cannot be determined from the image

Blue-gray mineral specimen (possibly sodalite)

Undetermined; appearance may be consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), but the image is insufficient for reliable identification

Small rounded pebble; specific identification uncertain

Indeterminate lithic fragment; mineral composition cannot be determined from the image

Rounded gray-green beach cobble

Unidentified lithic cobble; exact rock type cannot be determined from the image

Green cabochon, likely dyed or imitation material

Undetermined; the image is insufficient to identify a mineral species

Possible green tumbled stone

Unidentified green mineral or rock; the image is too blurred for reliable identification

Small rounded pebble, possibly quartz-rich stone

Indeterminate from image; likely quartz-bearing silicate rock

Unidentified dark, coarse-grained rock

Possibly diorite or gabbro; identification is uncertain from the image

Weathered pebble, possibly limestone

Unidentified carbonate or silicate rock; the image is insufficient for a definitive identification

Green stone fragment (unidentified)

Undetermined; possibly serpentine or greenstone, but the image is insufficient for identification

Possible iron-rich sulfide ore fragment

Unidentified sulfide, possibly pyrite-rich material (FeS₂); image is insufficient for a firm identification

Small, rounded stone pebble

Unidentified natural pebble; the image does not show enough detail to identify its mineral or rock type

Possible tumbled dark-green stone

Indeterminate from the blurry image; possibly serpentine or another green ornamental stone

Small rough mineral fragment, possibly quartz or feldspar

Unidentified silicate mineral; image is insufficient for a reliable species identification

Small dark pebble, possibly basalt or iron-rich stone

Undetermined; image alone cannot confirm composition

Small cylindrical mineral/stone fragment

Undetermined; the image is insufficient for reliable mineral identification

Possible basalt or other dark volcanic rock

Undetermined fine-grained mafic volcanic rock; basalt is a possibility

Mixed stream-worn rocks, likely including quartz-rich gravel

Composition indeterminate; visible material may include quartz (SiO₂) and assorted lithic fragments

Rounded river pebbles

Unidentified mixed lithologies; the reddish pebble may be iron-stained sandstone or volcanic rock

Small weathered rock fragment

Unidentified iron-stained, fine-grained rock; exact composition cannot be determined from the image

Waterworn pebble, possibly iron-rich basalt or river stone

Unidentified lithic clast; composition cannot be determined reliably from the image

Small rounded pebble, likely porous volcanic rock

Possibly vesicular basalt or scoria; exact identification is not possible from the image alone

Possible dark cobble or pebble

Unidentified rock; composition cannot be determined from the image

Green-gray stone pebble (not reliably identifiable from the image)

Undetermined; possibly a fine-grained sedimentary rock such as mudstone or siltstone

Mixed collection of small rounded pebbles

Unidentified river- or beach-worn lithic clasts; individual rock types cannot be determined confidently from the image

Small rounded pebble (rock type indeterminate)

Unidentified lithic pebble; specific composition cannot be determined from the image

Unidentified dark mineral/rock fragment

Indeterminate; appearance may fit a sulfide-bearing rock or iron-rich mineral

Likely rough green-blue glassy mineral fragment

Unidentified; the image is insufficient to distinguish a natural mineral from industrial slag or glass

Possible iron-rich meteorite fragment

Unidentified Fe–Ni meteoritic material; identification cannot be confirmed from this blurry image

Light-colored, fine-grained stone (possibly sandstone)

Unidentified rock; appearance is consistent with quartz-rich sandstone, but the image is insufficient for a firm identification

Small tan mineral or rock fragment (undetermined)

Unidentified; the image does not provide enough detail for a reliable identification

Small rock fragment (unidentified)

Undetermined; the image does not show enough detail for reliable identification

Likely sandstone pebble

Quartz-rich sandstone (composition uncertain from the image)

Small rough mineral or rock fragment (not identifiable from the image)

Undetermined; the specimen is too small and lacks diagnostic visible features for a reliable identification

Rounded river pebble, likely quartz-rich sandstone

Quartz-rich sandstone (tentative; exact identification is limited from the image)

Weathered stone pebble (exact rock type indeterminate)

Unidentified fine-grained rock; composition cannot be determined from the image

Smooth river pebble (exact rock type indeterminate)

Unidentified rounded lithic clast; composition cannot be determined from the photograph

Likely quartz-rich rocks

Possibly massive quartz (SiO₂); the photo is insufficient for a confident identification.

Gold ring with a dark, possibly gemstone setting

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

Greenish rough stone, possibly serpentine or soapstone

Indeterminate from the image; possible serpentinite (serpentine-group minerals) or talc-rich soapstone

Polished dark stone, possibly black tourmaline or a dark pebble

Undetermined; image lacks detail for reliable identification

Likely blue mineral or tumbled stone

Unidentified; the image is too blurry for reliable identification