Man Made Object (Metalwork)

Yellow cabochon gemstone, likely citrine or yellow glass imitation

Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Carved jasper bear figurine

Jasper, microcrystalline quartz (SiO₂), likely brecciated or orbicular jasper

Fossilized coral (possible)

Indeterminate fossil; the image does not show enough diagnostic detail to identify a taxon

Chalcedony / milky quartz flake

Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment

Tumbled sea glass or pale-green quartz pebble

Indeterminate from image; possibly quartz (SiO₂), but the smooth translucent piece may be man-made glass

Tumbled brown chalcedony or agate

Microcrystalline quartz (SiO₂), likely chalcedony; possibly iron-stained jasper or agate

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

White cabochon gemstone, likely milky chalcedony or opalite

Chalcedony: microcrystalline quartz, SiO₂; appearance may also indicate synthetic opalite glass

Likely blue mineral or tumbled stone

Unidentified; the image is too blurry for reliable identification

Small gold-colored jewelry piece with clear stones

Likely a metal setting holding small faceted gemstones; the stones cannot be identified from the image.

Pearl

Calcium Carbonate (Aragonite/Calcite) with Conchiolin

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (ZrO₂) or quartz (SiO₂), but the image may show a man-made simulant

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Polished smoky quartz crystal point

Quartz (SiO₂), likely iron-colored or smoky quartz with milky inclusions

Polished banded agate pendant

Agate, a microcrystalline variety of chalcedony (SiO₂)

Unidentified brown stone

Indeterminate from the image; possibly a common iron-stained mineral or rock fragment

Likely rough pink feldspar or rose quartz

Most likely microcline feldspar (KAlSi₃O₈) or rose quartz (SiO₂)

Polished agate bead bracelet

Agate, a banded microcrystalline variety of quartz (SiO₂), likely mixed-color dyed or naturally colored chalcedony

Chert (likely jasper/chalcedony-rich chert)

Microcrystalline quartz, SiO₂

Dark polished stone, possibly a pebble

Undetermined; image lacks detail for reliable identification

Polished jasper pendant

Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral inclusions

Possible dark garnet or other rough mineral fragment

Undetermined; the image does not show enough diagnostic detail to identify a species

Terrazzo (with Marble and Granite fragments)

Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates

Polished red jasper beads

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Heart-shaped ironstone pebble

Ironstone concretion, likely goethite/hematite cemented sandstone or siltstone

Blue chalcedony bead necklace

Chalcedony, microcrystalline quartz (SiO₂), commonly blue-dyed or blue-gray natural chalcedony

Likely polished dark gemstone cabochon

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

Ironstone concretion (likely goethite/limonite-rich)

Iron-oxide/hydroxide-rich concretion, commonly goethite (α-FeO(OH)) and limonite; exact identification requires testing

River Pebble

Polymictic rock fragment

Fossilized bivalve shell

Bivalvia indeterminate; likely a fossil clam or cockle

Red Jasper Cube

SiO2 (microcrystalline quartz)

Worn River Pebble with Fossil Indentation

Sedimentary Rock with Fossil Infill

Polished black stone carving, likely soapstone/steatite

Steatite (massive talc), Mg₃Si₄O₁₀(OH)₂; exact material cannot be confirmed from the image

River Pebble (likely Quartzite or Chert)

Sedimentary Clast (Silicon Dioxide dominant)

Polished brown-green stone, likely jade or serpentine

Undetermined; possible jadeite (NaAlSi₂O₆), nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂), or serpentine-group mineral

Possible dark-green tumbled stone

Unidentified; possibly serpentine or green jasper

Unable to identify - Image contains non-geological items

Possible smooth beach pebble (identity uncertain)

Unidentified fine-grained siliceous pebble; possibly chert or quartzite