Man Made (Synthetic Rock)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Titanium Coated Kyanite (Aura Kyanite)

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

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂), likely milky quartz

Small greenish crystal/mineral fragment

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

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Glass

Amorphous Silicon Dioxide (SiO2)

Green glass-like mineral specimen, likely fluorite

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

Amethyst gemstone ring

Quartz, purple variety — SiO₂

Brick fragment (Man-made material)

N/A (Fired clay)

Cherry Quartz

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

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Green Slag

Anthropogenic Silicate Glass

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Red Sandstone or Brick Fragment

Arenite (if sandstone)

White cabochon gemstone, likely milky chalcedony or opalite

Chalcedony: microcrystalline quartz, SiO₂; appearance may also indicate synthetic opalite glass

Polished labradorite sphere

Labradorite, calcic plagioclase feldspar ((Ca,Na)(Al,Si)₄O₈)

Polished labradorite pendant

Labradorite, a calcium-rich plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Cullet Glass (Strawberry Glass)

Amorphous Silicon Dioxide (SiO2) with metallic dopants

Bismuth

Bismuth (Bi)

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Likely tumbled or cut quartz/chalcedony fragment

Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz

Cobalt Glass Slug (Cullet)

Man-made Silicate Glass with Cobalt Oxide (CoO)

Goldstone (Brown/Gold)

Aventurine Glass (Man-made glass with Copper inclusions)

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Sea Glass

Man-made vitreous material (silica-based glass)

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Goldstone

Aventurine Glass (Man-made glass with copper inclusions)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Mystic Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Obsidian (Blue)

Volcanic Glass (SiO2)

Pink Quartz / Sea Glass

Silicon Dioxide (SiO2)

Carved labradorite fish

Labradorite, calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion