gemstone

Tumbled amber

Amber (fossilized plant resin; predominantly polymerized diterpenoid resin)

AI-generated identification · may be incorrect

Mohs hardness about 2–2.5; translucent honey-yellow to orange-brown with resinous luster, rounded surfaces, and commonly cloudy inclusions or flow textures. It is amorphous rather than crystalline and has low density (about 1.05–1.10).

Identified August 31, 2026More gemstone →

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Physical properties

Formation & geological history

Amber formed when ancient conifer or flowering-plant resin was buried, chemically altered, and hardened over millions of years; much commercial amber is Baltic amber, roughly 35–50 million years old (Eocene).

Uses & applications

Used for beads, cabochons, carvings, ornaments, and historical jewelry; it is also collected for insect or plant inclusions. Industrial uses are minor.

Geological facts

The specimen’s warm translucent color and polished/tumbled form are consistent with amber, though copal or synthetic resin can look similar. Amber often becomes electrostatically charged when rubbed with cloth.

Field identification & locations

Common sources include the Baltic region, Dominican Republic, Mexico, Myanmar, and Indonesia. Identify it by very low hardness, light weight, warm feel, buoyancy in strong salt water, and a pine-like odor when gently warmed; avoid destructive tests.