Man Made Material, Not A Natural Rock Or Mineral Specimen

Tumbled greenstone (likely serpentinite or green jasper)

Serpentinite, commonly dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄); exact identification requires testing

Titanium-coated Metal Cube (Man-made Fidget Toy)

Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)

Fossiliferous limestone with colonial coral

Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Green glassy mineral fragment, possibly fluorite

Fluorite (calcium fluoride, CaF₂), tentative identification

Trilobite fossil

Trilobita (exact species indeterminable from the image)

Dyed Crackle Quartz (Green)

Quenching-treated Quartz (Silicon Dioxide, SiO2)

Stone bead bracelet

Unidentified polished natural-stone beads; possibly wood-grain jasper, agate, or serpentine

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Sea Glass

Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature

Opalite (a synthetic glass, often confused with Opal)

Silicon dioxide glass (SiO2nH2O, for natural opal)

Sea Glass

Man-made silicate glass

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Quartz (likely milky quartz or quartz glass-like fragment)

Quartz, silicon dioxide (SiO₂)

Tumbled white chalcedony (likely milky quartz)

Chalcedony, microcrystalline quartz (SiO₂)

Sea Glass

Amorphous Silicon Dioxide (Man-made glass weathered by nature)

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Green Glass (often marketed as 'Obsidian' or 'Green Quartz')

Amorphous Silica (SiO2) with copper or chromium additives

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Green sea glass (likely)

Anthropogenic glass, not a mineral; composition commonly soda–lime silicate glass

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Clear Quartz Sphere (Rock Crystal)

Silicon Dioxide (SiO2)

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

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

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Tektite

Natural impact glass

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Paving-concrete aggregate with a rounded stone

Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock

Concretion (Sandstone)

Carbonate-cemented Sandstone Concretion

Carved red jasper bead (likely ceramic imitation)

Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Opalite

Synthetic opalescent glass

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)