Man Made Composite (Lithified Equivalent Of Sedimentary)

Fossil coral

Fossilized colonial coral, likely rugose or tabulate coral preserved in limestone

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Zinc Alloy (Silver-plated)

Zinc Alloy Casting (Zn-Al-Mg-Cu)

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Rainbow Hematite (Man-made/Treated)

Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)

Obsidian

Volcanic Glass

White quartz pebble or chip

Quartz (silicon dioxide, SiO₂), possibly milky quartz

Tumbled white chalcedony (likely milky quartz)

Chalcedony, microcrystalline quartz (SiO₂)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Green Quartz / Chrysoprase / Sea Glass

Silicon Dioxide (SiO2)

Slag Glass

Vitreous Silicate Residue

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Polished black pebble, likely basalt

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Opalite

Synthetic Opalised Glass

Opalite (a synthetic glass)

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

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Aura Quartz (Titanium/Rainbow Quartz)

SiO2 (Silicon Dioxide) with metallic coating

Libyan Desert Glass

Libyan Desert Glass (SiO2 with trace elements)

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)

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)

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Vesicular basalt (probable iron-rich volcanic rock)

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

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)

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)