Man Made Object (Simulant)

Red glassy mineral specimen, likely synthetic ruby or red spinel

Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing

Beaded gemstone jewelry, likely carnelian and green aventurine

Carnelian: orange chalcedony (microcrystalline SiO₂); green aventurine: quartz with fuchsite or other inclusions (SiO₂)

Amethyst gemstone ring

Quartz, purple variety — SiO₂

Carnelian cabochon pendant

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

Blue gemstone bead bracelet, likely lapis lazuli or dyed stone

Uncertain from image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or dyed quartz/glass imitation

Possible blue sapphire

Corundum (Al₂O₃), possibly blue sapphire

Chondrite Meteorite

Stony Meteorite (Chondrite)

Blue sapphire ring

Corundum, aluminum oxide (Al₂O₃), blue variety colored mainly by iron and titanium

Possible dark cobble or pebble

Unidentified rock; composition cannot be determined from the image

Lapis lazuli bead bracelet

Lapis lazuli, chiefly lazurite (Na₃Ca(Si₃Al₃)O₁₂S); commonly with calcite and pyrite

Tumbled orange chalcedony / jasper

Microcrystalline quartz, SiO₂, likely iron-stained chalcedony or quartz-rich jasper

Amber cabochon pendant

Amber (fossilized plant resin), chiefly polymerized diterpenoid resin

Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation

Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass

Polished agate slice

Microcrystalline quartz (SiO₂), chiefly chalcedony

Possible green glassy mineral pebble

Undetermined; possibly green aventurine (quartz) or another green mineral

Petrified Wood

Silicified Wood (primarily SiO2)

Gem-set gold ring

Likely gold alloy set with a colorless gemstone, possibly diamond or clear quartz; the stone cannot be identified reliably from the image

Unidentified small tan stone

Likely quartz-rich pebble; exact identification is impossible from the image alone

Small rounded pebble, likely quartz-rich stone

Unidentifiable from the image; possibly quartzite or quartz-bearing river pebble

Blue tumbled glass-like specimen; likely blue slag glass

Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image

Polished orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions; exact variety cannot be confirmed from the image

Diamond (in a gold ring)

Diamond (pure carbon, C)

Polished stone clock face, likely agate or jasper

Unconfirmed silica-rich material; possibly banded chalcedony (SiO₂)

Polished leopard-skin jasper (likely feldspar-rich decorative stone)

Trade name: leopard-skin jasper; appearance may also fit a feldspar-rich rock such as larvikite or gabbro

Tumbled tektite (likely Indonesian or Philippine tektite)

Natural silica-rich impact glass; chiefly SiO₂ with minor Al₂O₃, FeO, MgO, CaO, and Na₂O

Ammonite fossil

Ammonoidea; likely a Jurassic or Cretaceous ammonite

Weathered pegmatite or feldspar-rich granite fragment

Granitic pegmatite, composed mainly of potassium feldspar and quartz, with minor mica; exact identification is uncertain from the photograph

Ambergris

Ambrein-rich Calculus

Small purple crystal, possibly amethyst

Quartz (SiO₂), tentatively amethyst

Possible polished or tumbled stone

Unidentified; the image does not show enough detail to determine its composition

Polished black-and-white banded agate (likely dyed or painted)

Chalcedony (microcrystalline quartz), SiO₂; exact banding variety uncertain

Diamond

Diamond (Native Carbon, C)

Vesicular Basalt (Scoria)

Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)

Diamond

Carbon (C)

Sandstone or Quartzite Pebble

Arenite or Quartzite

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Raw quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely milky or cloudy quartz

Dark mafic rock, possibly basalt

Likely basalt; precise identification is uncertain from the image

Black tourmaline bead bracelet (likely schorl)

Schorl, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)

Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)

Gemstone ring (stone not identifiable)

Unknown; the small central stone may be a colorless gemstone or glass, and the surrounding metal is gold-colored alloy