Man Made Metamorphic Style Composite

Weathered iron-rich concretion or ironstone nodule

Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)

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)

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Tumbled milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Diamond

Carbon (C)

Chert Arrowhead (Lithic Tool)

Microcrystalline quartz (SiO2) - Archeological lithic artifact

Aura Quartz (Pink/Rose Aura Quartz)

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

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Pet Rock (Man-made Quartzite or Granite Cobble)

Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica

Ruby in Zoisite

Anyolite (composite of Corundum and Zoisite)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Dyed Agate / Painted Stone

Silicon Dioxide (SiO2) with artificial pigment

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Polished black stone, likely black obsidian

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

Vesicular basalt (probable iron-rich volcanic rock)

Basalt; chiefly plagioclase, clinopyroxene, olivine, and Fe-Ti oxides

White quartz pebble

Quartz (SiO₂), likely milky quartz

Opalite

Synthetic Glass (Simulated Opal)

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

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Gemstone jewelry ensemble

Likely mixed gemstone and glass-bead jewelry; exact stones cannot be determined from the image

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 opalescent glass

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Glass

Amorphous Silicon Dioxide (SiO2)

Goldstone

Aventurine glass

Green glass-like mineral specimen, likely fluorite

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

Opalite

Synthetic Opalised Glass

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)

Opalite (Man-made Glass)

Synthetic Opalised Glass

Cherry Quartz

SiO2 (Silicon Dioxide with iron-rich inclusions/dye)