Man Made Object (Simulant)

White pebble, likely quartz or calcite

Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Polished blue glassy mineral specimen, likely sodalite or blue aventurine

Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Diamond

Native Carbon (C)

Conglomerate

Conglomerate (clastic sedimentary rock)

Blue Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Blue glassy gemstone-like specimen

Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Aluminum Slag

Anthropogenic Aluminum (Al)

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Cullet (Slag Glass)

Amorphous Silica (SiO2) with various metal oxide colorants

Milky quartz

Quartz (silicon dioxide, SiO₂)

Polished opalite (likely man-made opalescent glass)

Opalite is a commercial name, not a mineral; typically opalescent glass, often soda-lime silicate glass

Sea Glass

Amorphous silicon dioxide (man-made glass weathered by nature)

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Goldstone (likely red/brown aventurine glass)

Man-made aventurine glass; copper-bearing silicate glass (not a natural mineral)

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Likely tumbled red mineral or glass imitation

Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony

Metallic Ornament / Jewelry

N/A - This is an artificial object, not a geological specimen.

Slag

Anthropogenic Vitreous Silica/Iron oxides

Concrete rubble

Anthropogenic conglomerate

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Tourmalinated quartz point

Quartz (SiO₂) with black tourmaline (schorl, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) inclusions

Small rounded mineral pebble, possibly quartz

Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining

Titanium Aura Quartz

Silicon Dioxide (SiO2) coated with Titanium and Niobium

Concretion with Geode Cavity

Ferruginous Sandstone Concretion with Quartz Center

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Mounted clear gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂), synthetic; exact stone cannot be confirmed from the image

Sea Glass

Man-made vitreous material (silica glass)

Goldstone

Man-made glass infused with metallic copper

Opalite

Man-made Glass (Synthetic Opalized Glass)

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Opalite

Synthetic Opalized Glass / Man-made Glass

Opalite

Man-made glass (traditionally simulated Opal)

Sea Glass

Man-made vitreous material (silica-based glass)

Pearl-and-gemstone insect brooch

Pearl: nacre (aragonite, CaCO₃); colored stones are likely synthetic or natural corundum/spinel/glass, not determinable from the image

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), opaque-to-translucent milky variety

Beaded gemstone jewelry (likely amethyst, lapis lazuli, and pearl or glass imitation)

Mixed mineral beads; possible quartz (SiO₂) and lazurite-bearing lapis lazuli

Goldstone

Man-made glass infused with copper crystals