Man Made Object (Simulant)

Dark quartz point (possibly smoky quartz)

Quartz, SiO₂; the dark color may indicate smoky quartz, but the image is insufficient to confirm

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Blue Goldstone

Aventurine Glass (Silicon Dioxide with metal inclusions)

Emerald (cut gemstone)

Beryl, Be₃Al₂(SiO₃)₆; green color typically from chromium and/or vanadium

Carnelian cabochon

Orange-red variety of chalcedony (microcrystalline quartz), SiO₂

Unidentified gray-green stone

Indeterminate; the specimen is too blurred and obscured for reliable identification

Polished orbicular jasper (likely ocean jasper)

Siliceous microcrystalline quartz/chalcedony with iron-oxide and volcanic inclusions; commonly called ocean jasper

Garnet-set gold ring

Likely almandine garnet, Fe₃Al₂(SiO₄)₃; the image does not establish the stone’s identity or treatment

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

Silicon Dioxide (SiO2) with artificial coloration

Diamond-set earring

Diamond (carbon, C); crystal structure: cubic

Small clear crystal, possibly quartz or glass-like gemstone

Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia

Gray rock (possibly basalt or fine-grained granite)

Undetermined; no diagnostic minerals are visible

Likely tumbled epidote-bearing rock or green jasper

Epidote-group silicate, possibly in a jasper or serpentinite matrix

Tumbled amethyst quartz

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Obsidian (likely)

Volcanic glass; primarily silica-rich rhyolitic composition (approximately 70–75% SiO₂)

Soapstone Carving

Steatite

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

Diamond (or Cubic Zirconia simulant)

Carbon (C) or Zirconium Dioxide (ZrO2)

Cut gemstone ring, likely diamond

Diamond (carbon, C), faceted gemstone; exact stone identification is uncertain from the image

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Red gemstone ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), chromium-colored; natural versus synthetic cannot be determined from the photo

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

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

Moonstone cabochon ring

Adularia moonstone, potassium feldspar (orthoclase, KAlSi₃O₈), possibly imitation or another white translucent gemstone

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

Cut gemstone, likely diamond

Diamond (crystalline carbon, C)

Serpentine

Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)

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

Polished smoky quartz crystal point

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

Diamond

Carbon (C)

Diamond jewelry

Diamond (crystalline carbon, C)

Polished banded agate pendant

Agate, a microcrystalline variety of chalcedony (SiO₂)