gemstone

Tumbled amber

Amber (fossilized plant resin), chiefly polymerized diterpenoid resin

AI-generated identification · may be incorrect

Mohs hardness about 2–2.5; transparent honey-yellow to orange with internal flow lines and bubbles, resinous luster, amorphous/noncrystalline structure, no cleavage; specific gravity about 1.05–1.10, so it may float in concentrated salt water.

Identified August 10, 2026More gemstone →

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Physical properties

Formation & geological history

Amber formed when ancient trees exuded resin that was buried, chemically altered, and polymerized over roughly 2–300 million years; this specimen’s color and appearance are consistent with Baltic or other Cretaceous–Tertiary amber, though exact age requires testing.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and collectible inclusions; historically used as incense and decorative material, but it is too soft for most industrial applications.

Geological facts

Warm amber can produce a pine-like odor and static charge when rubbed; ultraviolet light may cause blue, green, or yellow fluorescence. Dark internal patches can be oxidation, flow structure, or organic inclusions.

Field identification & locations

Identify by low density, warm lightweight feel, conchoidal-like fracture, resin scent when gently heated, and possible UV fluorescence; common sources include the Baltic region, Dominican Republic, Mexico, Myanmar, and Indonesia.