Sedimentary (Synthetic)

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

Clear Quartz (Faceted) / White Sapphire / Goshenite

Silicon Dioxide (SiO2) / Aluminium Oxide (Al2O3)

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Ruby

Corundum (Al2O3 with Chromium traces)

Blue Sapphire

Corundum (Al2O3)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Diamond (or Diamond Simulant)

Carbon (C)

Amethyst (Resin Carving/Orgonite)

Silicon Dioxide (SiO2) with iron impurities

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Opalite

Synthetic Opalized Glass / Man-made Glass

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Ammolite

Biogenic gemstone (Aragonite, CaCO3)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Tumbled amethyst

Amethyst, purple quartz (SiO₂), colored by trace iron and irradiation

Tumbled amethyst

Quartz, crystalline silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond

Assorted Semi-Precious Gemstone Crosses

Quartz, Silicates, Carbonates (various)

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Goldstone

Aventurine glass

Larimar

Pectolite (NaCa2Si3O8(OH))

Smoky Quartz

Silicon Dioxide (SiO2)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Magnetite or Hematite-rich Ore

Magnetite (Fe3O4) or Hematite (Fe2O3)

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Opalite (a synthetic glass)

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

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Cubic Zirconia (Faceted)

Zirconium Dioxide (ZrO2)

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions