Mineralogical

Black Pearl (Tahitian or Irradiated Type)

Organic gemstone (Calcium Carbonate with Conchiolin Binding)

Amber

Succinite (with approximate formula C10H16O)

Amber

Succinite (C10H16O)

Natural White Pearl

Calcium Carbonate (Aragonite/Calcite) with Conchiolin - CaCO3

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Tektite

Tektite (high-silica natural glass)

Precious Opal

Hydrated silica (SiO2·nH2O)

Tektite (Indochinite)

Tektite - High-silica amorphous glass (SiO2 + Al2O3)

Amber

Succinate (Organic Fossilized Resin)

Amber

Succiniferous fossil resin (C10H16O)

Amber

Succinite (specific to Baltic amber), fossilized tree resin

Amber

Succinite (Approximate formula: C10H16O)

Amber

Succinite (Resinous fossilized tree sap)

Pink Opal

Hydrated Silica (SiO2·nH2O) with Palygorskite inclusions

Amber

Succinite (specifically for Baltic amber); chemical formula approximately C10H16O

Precious Opal

Hydrated Silica (SiO2·nH2O)

Amber

Succinite (organic hydrocarbon)

Burmese Amber (Burmite)

Burmite (C10H16O)

Amber

Succinates (Organic Fossilized Resin)

Pink Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Amber

Succiniferous fossil resin (C10H16O)

Cullet Glass (Man-made Glass Slag)

Amorphous Silica (SiO2) with chemical additives

Polished mahogany obsidian (likely)

Volcanic glass; primarily silica-rich rhyolitic glass (SiO₂), with iron oxides

Polished black obsidian pyramid/block

Obsidian — natural volcanic glass, chiefly rhyolitic silica (approximately 70–75% SiO₂)

Mahogany Obsidian

Volcanic glass (SiO2 with Hematite/Magnetite inclusions)

Mahogany Obsidian

Obsidian (Volcanic Glass with Hematite inclusions)

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (primarily SiO2)

Black Obsidian

Obsidian (Volcanic Glass)

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (70–75% SiO2)

Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Limonitic Iron Ore / Goethite

Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)

Obsidian

Obsidian (Volcanic Glass, SiO2)

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with inclusions of Hematite or Magnetite)

Mahogany Obsidian

Volcanic glass (SiO2 with Hematite or Magnetite inclusions)

Snowflake Obsidian

Volcanic glass with Cristobalite inclusions (mostly SiO2)

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

Black Obsidian

Obsidian (Volcanic Glass, ~70% SiO2)

Obsidian

Volcanic Glass (SiO2)

Snowflake Obsidian (Flower Jasper variant)

Vitreous volcanic silicate with cristobalite inclusions