Mineral (Synthetic Paper And Ink Polymorph)

Blue cabochon gemstone ring

Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel

Fluorite

Calcium Fluoride (CaF2)

Likely graphite-rich ore or galena-bearing rock

Graphite (C) or galena (PbS), identification uncertain from photograph

Blue glass-like gemstone, likely synthetic spinel or glass

Uncertain; possibilities include synthetic cobalt-blue spinel (MgAl₂O₄) or cobalt-colored glass

Anthracite coal

Anthracite; predominantly carbon (C), with minor mineral ash

Ruby (mounted cabochon)

Corundum, Al₂O₃; red color typically from chromium

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

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

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Rainbow carborundum (silicon carbide)

Silicon carbide, SiC; commonly synthetic moissanite/carborundum specimen

Smoky Quartz

Silicon Dioxide (SiO2)

Polished fossiliferous limestone

Bioclastic limestone, commonly called fossil limestone or marble-like limestone

Opalite

Synthetic Glass (Simulated Opal)

Tumbled Mineral Collection (Amethyst, Celestite, K2 Jasper, Rose Quartz, Ruby in Zoisite, Que Sera Stone)

Mixed Mineral Specimens (Quartz SiO2, Celestite SrSO4, Corundum Al2O3 with Zoisite, etc.)

Synthetic Sapphire and Ion-X Glass

Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass

Opalite

Synthetic glass (SiO2 + metal additions)

Corundum (Pink Sapphire / Ruby)

Al2O3 (Aluminum Oxide)

Amber

Succinates (Organic Gemstone)

Opalite (a synthetic glass)

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

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Diamond (or Cubic Zirconia simulant)

C (Carbon) or ZrO2 (Zirconium Dioxide)

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Marble

Recrystallized Calcite Rock (CaCO3)

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions

Calcite

Calcite (CaCO3)

Aragonite Star Cluster

Aragonite (Calcium Carbonate - CaCO3)

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Marble

Recrystallized Carbonate Rock (CaCO3)

Graphite-rich metamorphic rock (graphitic schist)

Graphitic schist; chiefly graphite (C), quartz (SiO₂), and mica minerals

Marble

Recrystallized Calcite (CaCO3)

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Honey calcite (optical calcite)

Calcite, calcium carbonate (CaCO₃)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Barite

Barium Sulfate (BaSO4)

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

White Marble

Metamorphic Limestone (CaCO3)

Decorative opal-like turtle mosaic

Likely imitation or assembled opal material; exact stones cannot be confirmed visually

Kyanite

Kyanite (Al2SiO5)