Unknown

Likely serpentine or serpentinite

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximate formula Mg3Si2O5(OH)4

Pink halite (rock salt)

Halite — sodium chloride (NaCl), likely colored by impurities or inclusions

Weathered, light-colored rock (specific identification uncertain)

Possibly granitic rock; mineral species cannot be identified reliably from the image

Small stone fragments

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

White jade-like beaded bracelet

Unverified; possibly milky quartz or white jade (nephrite jade or jadeite)

Milky quartz with a dark mica-rich band

Quartz (SiO₂), likely with biotite or another dark mica; host rock uncertain

Tumbled, mottled stone (possibly jasper or another ornamental rock)

Undetermined from the photograph; visual appearance is insufficient for a reliable species identification

Small cream-colored fossil shell

Likely a fossilized gastropod or bivalve shell; exact identification is not possible from the image

Polished, carved gemstone (possibly dyed agate or glass-like material)

Unconfirmed from the image; no specific mineral can be identified reliably

Fossilized tooth fragment, possibly shark tooth

Fossilized vertebrate dental material, composed chiefly of hydroxyapatite

Conglomerate (likely pebble-rich rock)

Lithified conglomerate; exact composition cannot be determined from the photo

Black stone bead strand (possibly black onyx or hematite)

Unidentifiable from the image; candidates include chalcedony (SiO₂, black onyx) or hematite (Fe₂O₃)

Small fossil shell (possibly a brachiopod or clam)

Unidentified fossilized bivalve or brachiopod; species cannot be determined from the image

Small water-worn pebble, likely quartz-rich stone

Unidentified quartz-rich lithic pebble; precise identification is not possible from the image

Small gray translucent stone, possibly quartz or glassy mineral

Uncertain; likely microcrystalline quartz (SiO₂), but the image is insufficient for definitive identification

Probable fossilized coral

Fossil coral; exact coral group and species cannot be determined from the image

Polished stone-bead bracelet, likely mixed natural stones

Unidentified assemblage; beads appear to include feldspar-rich stones and possibly granite or other silicate rocks

Likely quartz-rich pebble

Quartz-bearing granite, granitic gneiss, or quartzite (indeterminate from photo)

Small dark metallic-looking rock fragment

Undetermined; possibly iron oxide-rich material or a metallic mineral

Foliated metamorphic rock (likely mica schist)

Mica schist, typically composed of quartz and mica (muscovite and/or biotite)

Small rough mineral/rock specimen (not confidently identifiable)

Undetermined; image detail is insufficient for a reliable identification

Likely serpentinite with a polished dark-green serpentine pebble

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), commonly with magnetite and minor chromite/talc

Likely granite

Granite, a coarse-grained felsic intrusive igneous rock

Halite (Rock Salt)

Halite (NaCl)

Himalayan Pink Salt (Halite)

Halite (Sodium Chloride, NaCl)

Fossil coral (likely a weathered colonial coral fragment)

Fossilized scleractinian coral; genus and age cannot be determined from the image

Purple glassy pebble, possibly slag glass

Unidentified; likely man-made glass rather than a natural mineral

Probable fossilized bone fragment

Fossil bone; taxonomic identity and age cannot be determined from the image

Likely rose quartz and a weathered blue-gray rock

The upper specimen resembles massive rose quartz (SiO₂); the lower specimen cannot be identified reliably from the image and may be a quartz- or feldspar-rich rock.

Possible fossil-bearing pebble

Unidentified fine-grained sedimentary rock; the small orange feature may be a fossil or mineral inclusion

Likely ironstone or iron-rich sandstone fragment

Iron-oxide-cemented sandstone; exact mineral composition cannot be confirmed from the photograph

Blue-stone ring, likely set with blue glass or a dark-blue gemstone

The stone cannot be identified reliably from the image; possible sapphire (corundum, Al₂O₃), lapis lazuli, or glass

Tumbled orange-brown stone, possibly quartzite or jasper

Undetermined; likely iron-stained quartz-rich rock (quartz, SiO₂)

Unidentified dark mineral or rock specimen

Indeterminate from the severely blurred image; possible dark igneous rock or opaque mineral

Indeterminate metallic mineral fragments

Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock

Likely weathered quartz-bearing rock fragment

Indeterminate; appears to contain quartz (SiO₂) with iron-oxide staining, possibly from quartzite, granite, or pegmatite

Malachite-bearing matrix specimen

Malachite, Cu₂CO₃(OH)₂, with likely quartz and iron-stained host rock

Banded agate (rough or partly polished)

Agate, a microcrystalline variety of quartz (SiO₂; chalcedony)

Limestone paving slab

Limestone, composed mainly of calcite (CaCO₃)

Pegmatite

Granitic pegmatite, composed chiefly of quartz, feldspar, and mica

Unidentified natural rock specimens

Likely weathered, feldspar-rich granite or granitic pegmatite; exact identification requires close examination or testing

Weathered fossil bone fragment (possible mammal bone)

Fossilized vertebrate bone; exact taxon and age cannot be determined from the photo