Mineral (Man Made Composite)

White pebble, likely quartz or calcite

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

Diamond

Native Carbon (C)

Blue Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Sea Glass

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

Aluminum Slag

Anthropogenic Aluminum (Al)

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Opalite

Synthetic Glass (Simulated Opal)

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

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

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

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

Polished opalite (likely man-made opalescent glass)

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

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Dalmatian Stone

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

Likely tumbled red mineral or glass imitation

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

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Concretion with Geode Cavity

Ferruginous Sandstone Concretion with Quartz Center

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Green Aventurine

SiO2 (Silicon Dioxide with Fuchsite inclusions)

Opalite

Synthetic Opalized Glass / Man-made Glass

Opalite

Synthetic Opalized Glass

Sea Glass

Man-made vitreous material (silica-based glass)

Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Aggregate Concrete

Anthropogenic Conglomerate (Technosol)

Tumbled milky quartz

Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible

Opalite

Synthetic Glass / Man-made Opal Simulant

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Opalite

Man-made glass (traditionally simulated Opal)

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Aura Quartz (Titanium-coated Quartz)

Silicon Dioxide (SiO2) with metallic vapor coating

Cubic Zirconia

Cubic Zirconium Dioxide (ZrO2)

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Opalite

Synthetic Glass (SiO2 + impurities)

Opalite

Synthetic Glass (typically Silica/Magnesium based with metal additives)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC) / Moissanite (natural)