Mineral (Processed Metal)

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Metal Chain Belt with Square Plates

Not applicable (man-made)

Likely silver-gray metallic ore fragment

Unidentified metallic mineral; possibly galena (PbS), but the image is insufficient for a confident identification

Opalite

Synthetic Glass / Man-made Opal Simulant

Diamond-encrusted microphone-shaped pendant

Diamond (natural or synthetic) set in gold-colored metal; exact stones and metal cannot be confirmed visually

Gemstone-set ring, likely cubic zirconia or diamond

Likely synthetic cubic zirconia (zirconium dioxide, ZrO₂); stones may alternatively be diamond (carbon, C)

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Silver (Native or Alloyed)

Ag (Argentum)

Gold (10K Alloy)

Aurum (Au) with alloying metals (Cu, Ag, Zn)

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Vintage-style bracelet with likely black onyx and yellow-and-white jasper or agate cabochon

Onyx (cryptocrystalline quartz, SiO₂); central stone appears to be patterned jasper or agate (chalcedony, SiO₂), though identification from the image is uncertain

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

Gold-bearing sulfide ore (tentative)

Native gold, likely with pyrite/chalcopyrite in quartz or altered rock

Blue slag glass / industrial glass fragment

Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag

Possible industrial slag or basaltic volcanic glass

Likely iron-rich vitreous slag; natural alternative: basaltic glass (tachylite)

Black cabochon pendant, likely onyx or black glass

Most likely black chalcedony (microcrystalline quartz, SiO₂); the surrounding stones may be cubic zirconia or glass

Gold-bearing quartz or ironstone fragment

Quartz (SiO₂) with possible native gold and iron oxides

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

Quartz crystal pendant (likely smoky quartz or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Native bismuth

Bismuth (Bi), commonly with a naturally oxidized surface

Likely hematite-rich ironstone or metallic mineral fragment

Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron

Faceted colorless gemstone, likely cubic zirconia or diamond

Cubic zirconia (zirconium dioxide, ZrO₂) or diamond (carbon, C)

Carved translucent jade pendant

Likely nephrite jade (actinolite–tremolite series); possibly jadeite or chalcedony, identification requires testing

Slag

Ferrous slag (by-product of iron smelting)

Polished sodalite pendant

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂, likely with minor albite or nepheline

Slag

Amethyst and clear gemstone ring

Amethyst (purple quartz, SiO₂), likely set with colorless quartz or glass accents

Gold bullion bars

Native gold (Au), likely cast or refined metal

Bismuth crystal

Bismuth (Bi), artificially crystallized

Carved pale green jade-like pendant

Likely nephrite jade (tremolite–actinolite amphibole); possibly serpentine or treated aventurine

Gold-bearing quartz vein fragment (probable placer gold specimen)

Quartz (SiO₂) with probable native gold (Au) and iron-oxide staining

Nugget of Native Silver

Native Silver (Ag)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Goldstone (blue/black aventurine glass)

Man-made aventurine glass; silica glass containing metallic copper or other glittering inclusions

Diamond ring

Diamond (crystalline carbon, C)

Tumbled stone

Unknown

Gold (Processed)

Gold (Au)

Diamond-set gold jewelry piece

Diamond, crystalline carbon (C), mounted in gold alloy

Blue Glass / Slag Glass

Amorphous silicon dioxide (SiO2) with cobalt colorants

Blue gemstone ring, likely blue topaz or synthetic blue spinel

Likely topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); identification is uncertain from the image

Diamond ring

Diamond (crystalline carbon, C)