Mineral (Synthetic Paper And Ink Polymorph)

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

Synthetic Ruby (Jewel Bearings)

Synthetic Corundum (Al2O3 doped with Chromium)

Red Sandstone Pebble

Arenite (Quartz Sandstone / Hematitic Sandstone)

Blue Sapphire

Corundum (Al2O3 with Cr, Fe, and Ti trace elements)

Painted River Rock

Artificially Coated Sedimentary Rock

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.)

Emerald

Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Hematite

Iron(III) oxide (Fe2O3)

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Hematite

Iron(III) oxide (Fe2O3)

Citrine

Citrine (Silicon Dioxide, SiO2)

Iolite (Cordierite)

Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18

Smoky Quartz (with Druzy/Polished Edge)

Smoky Quartz (Silicon Dioxide, SiO2)

Bismuth Crystal

Bismuth (element symbol Bi, atomic number 83)

Honey Calcite

Calcite (Calcium Carbonate - CaCO3)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

Marble

Recrystallized Calcite Rock (CaCO3)

Marble

Recrystallized Carbonate Rock (CaCO3)

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Barite

Barium Sulfate (BaSO4)

Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Pyrite

Iron Sulfide (FeS2)

Opalite

Synthetic Glass (Simulated Opal)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium

Opalite

Opalescent Glass (SiO2 + coloring agents)

White Marble

Metamorphic Limestone (CaCO3)

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Obsidian with Spherulitic Devitrification (Snowflake Obsidian/Mahogany related)

Volcanic Glass (70% or more SiO2)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

White Marble

Recrystallized Calcite (CaCO3)

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Ruby

Corundum (Al2O3)

Blue Sapphire (in a faceted jewelry setting)

Corundum (Al2O3) with trace Iron and Titanium

Blue Sapphire

Corundum (Al2O3)

Silicon

Crystalline Silicon (Si)