Synthetic Material (Not A Rock Or Mineral)

Sandstone

Sedimentary Rock (Quartz arenite)

Gravel / Crushed Stone

Aggregate (mixed mineral rock fragments)

Ruby / Red Tourmaline

Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)

Lapis Lazuli

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

Ring with an Orange Inlay

N/A (Man-made object)

Colorless faceted gemstone, likely cubic zirconia

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

Note: No specimen visible

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Opalite

Synthetic Opalized Glass

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Opalite

Synthetic opalescent glass

Lapis Lazuli

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

Sandstone

Arenite (primary component SiO2)

Turquoise cabochon jewelry

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)

Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Dyed Alum or Dyed Quartz (Ornamental Crystal)

Silicon Dioxide (SiO2) or Potassium Alum [KAl(SO4)2·12H2O]

Ruby

Corundum (Al2O3)

Diamond (Faceted Colorless)

Diamond (Pure Carbon, C)

Opalite

Synthetic Opalised Glass

Cubic Zirconia

Cubic Zirconium Dioxide (ZrO2)

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Colorless faceted gemstone (likely cubic zirconia)

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

Opalite

Synthetic Glass (SiO2 + impurities)

Sandstone

Arenite (SiO2 based)

Opalite

Synthetic Glass (Simulated Opal)

Opalite Egg

Synthetic Glass (Simulated Opal)

Opalite

Synthetic Silicon Dioxide (SiO2)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Iridescent coated quartz (likely synthetic/display gemstone)

Quartz, silicon dioxide (SiO₂), likely faceted and surface-coated; exact material cannot be confirmed visually

Diamond

Carbon (C), Native Element

Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial dyes

Diamond (or Cubic Zirconia)

Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ

Cubic Zirconia (as a jewelry specimen)

Zirconium dioxide (ZrO2)

Opalite

Man-made Opalized Glass (Synthetic Glass)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities