Not A Rock (Synthetic Material)

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Blue Goldstone

Aventurine Glass (SiO2 with Co and metallic inclusions)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Peridot gemstone pendant

Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Diamond (Faceted Gemstone)

Native Carbon (C)

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions

Plastic Building Toy (Lego-style piece)

Acrylonitrile Butadiene Styrene (ABS)

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Opalite

Man-made Opalized Glass (Synthetic Glass)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium

Lapis Lazuli (Low Grade)

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)

Bauxite

Bauxite (Mixture of Hydrous Aluminum Oxides)

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Staurolite (Fairy Stone)

Staurolite (Fe2+2Al9Si4O23(OH))

Yellow-orange faceted gemstone, likely citrine or yellow topaz

Citrine: quartz, SiO₂; yellow topaz: Al₂SiO₄(F,OH)₂

Opalite

Man-made Glass (Synthetic Opalized Glass)

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Blue opalite (often sold as synthetic opal)

Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Opalite (a synthetic glass)

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

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

Lapis Lazuli

Lapis lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Lapis Lazuli

Lazurite-dominant metamorphic rock, Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Goldstone (Red)

Aventurine Glass

White seed-bead gemstone strand, likely freshwater pearl or shell pearl

Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)