Man Made Rock (Technosol)

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Magnetic Hematite (Man-made)

Iron Oxide (Fe2O3) with Barium-Strontium Ferrite

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Sandstone Concretion

Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)

Aura Quartz (Titanium/Rainbow Quartz)

SiO2 (Silicon Dioxide) with metallic coating

Libyan Desert Glass

Libyan Desert Glass (SiO2 with trace elements)

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Chert (Arrowhead/Artifact Fragment)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ceramic or Polished Stone Heart (Anthropogenic Material)

Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Opalite

Synthetic Opalized Glass (SiO2 + additives)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Brick fragment (Man-made material)

N/A (Fired clay)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Polished milky quartz (likely quartz worry stone or wand)

Quartz, silicon dioxide (SiO₂)

White quartz pebble

Quartz (SiO₂), likely milky quartz

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

Tumbled milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Diamond

Carbon (C)

Milky quartz (likely rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Polished black stone, likely black obsidian

Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂), likely milky quartz

Small greenish crystal/mineral fragment

Indeterminate; possibly olivine, quartz, or a green gemstone fragment

Opalite

Synthetic Glass (Simulated Opal)

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

Ferrous Slag

Iron/Steel Slag (Complex Calcium-Alumino-Silicates)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Opalite

Synthetic opalescent glass

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Glass

Amorphous Silicon Dioxide (SiO2)

Goldstone

Aventurine glass

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)