Man Made Object (Simulant)

Clear Quartz (faceted) / Diamond Simulant

Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)

Diamond in a gold-tone setting

Diamond, crystalline carbon (C)

Oval faceted gemstone ring, likely diamond

Diamond (crystalline carbon, C), possibly a diamond simulant; identification requires testing

Faceted colorless gemstone, likely glass or diamond imitation

Unidentified; possibly diamond (carbon, C) or cubic zirconia (zirconium dioxide, ZrO₂)

Diamond (or Cubic Zirconia)

Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ

Colorless faceted gemstone, likely diamond

Diamond; crystalline carbon (C)

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium Dioxide (ZrO2 if synthetic)

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃); ruby when red, possibly laboratory-grown

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

Blue Howlite (Dyed)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Serpentine

Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

US Penny

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

Diamond engagement ring

Diamond, crystalline carbon (C)

Diamond ring

Diamond, crystalline carbon (C), set in a likely precious-metal ring

Cut diamond tennis-chain jewelry

Diamond, crystalline carbon (C), cubic crystal system

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

Mammoth Tooth

Mammuthus primigenius (Tooth fragment)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

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

Green gemstone ring, likely emerald simulant or jade

Uncertain; possible beryl (emerald, Be₃Al₂Si₆O₁₈) or jadeite (NaAlSi₂O₆), but the blurred image may show synthetic glass or another treated stone

Blue glass-like gemstone, likely synthetic spinel or glass

Uncertain; possibilities include synthetic cobalt-blue spinel (MgAl₂O₄) or cobalt-colored glass

Blue Goldstone

Aventurine Glass

Faceted clear gemstone, likely glass imitation or cubic zirconia

Uncertain; possibilities include cubic zirconia (zirconium dioxide, ZrO₂), quartz (SiO₂), or lead glass

Cubic Zirconia

Cubic Zirconia (Zirconium Dioxide, ZrO2)

Serpentine (Nephrite-like Serpentine)

Serpentinite (Hydrous magnesium iron phyllosilicate)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

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

Diamond bracelet (gold-set)

Diamond, crystalline carbon (C); gold alloy setting

Tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentine (Greenstone)

Antigorite, Lizardite, and Chrysolite mixture (Mg3Si2O5(OH)4)