Man Made Object (Metalwork)

Green aventurine (likely), shaped star

Quartz, SiO₂, with green fuchsite inclusions

Polished blue-green jasper beads

Jasper, an opaque microcrystalline variety of quartz (SiO₂)

Chalcedony (likely blue agate) knapped into an arrowhead

Microcrystalline quartz, SiO₂ (chalcedony)

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Likely fossilized coral with polished blue calcite or aragonite specimen

Fossil coral, commonly Scleractinia; blue material likely dyed or treated calcite/aragonite

Polished black stone pendant

Likely black obsidian or black tourmaline; exact identification is uncertain from the photograph

Likely banded obsidian or dark volcanic glass

Obsidian, predominantly rhyolitic volcanic glass (SiO₂-rich), possibly with devitrified bands and phenocrysts

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Jasper

Microcrystalline Quartz (SiO2)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Mixed small mineral specimens, likely quartz varieties

Uncertain from the image; translucent pieces may be quartz (SiO₂), while golden-brown pieces could be iron-stained quartz or calcite

Large faceted colorless gemstone, likely quartz crystal

Quartz (silicon dioxide, SiO₂); exact material cannot be confirmed visually

US Penny

Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy

Granodiorite

Granodiorite

Unidentifiable blurred specimen

Cannot be determined from the image

Goldstone (likely blue-free synthetic goldstone pendant)

Synthetic aventurine glass; silica glass with dispersed metallic copper crystals

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Mammoth Tooth

Mammuthus primigenius (Tooth fragment)

Jasper / Chert (Red)

Cryptocrystalline quartz (SiO2)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Small dark stone (unidentified)

Undetermined; image lacks enough detail for reliable identification

Small rough mineral/rock specimen (not confidently identifiable)

Undetermined; image detail is insufficient for a reliable identification

Small fossilized tooth, possibly a shark tooth

Indeterminate fossil tooth; species cannot be identified from this image

Red heart-shaped glass bead in a wire-wrapped jewelry charm

Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen

Possible iron-rich meteorite fragment

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

Chert or silicified sedimentary fragment (tentative)

Microcrystalline quartz (SiO₂), possibly silicified limestone or fossil-bearing chert

Polished dendritic agate cabochon (likely agate or jasper)

Microcrystalline quartz, SiO₂, commonly chalcedony with iron-oxide inclusions

Tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Dark quartz point (possibly smoky quartz)

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

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

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

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

Silicon Dioxide (SiO2) with artificial coloration

Polished orbicular jasper (likely ocean jasper)

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

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