gemstone

Polished amber

Fossilized tree resin; chiefly polymerized diterpenoid resin (succinite when Baltic-type)

AI-generated identification · may be incorrect

Honey-brown, translucent, resinous to waxy luster, commonly containing flow lines or inclusions; Mohs hardness 2–2.5, amorphous/noncrystalline, specific gravity about 1.05–1.10, with no cleavage. The rounded, polished appearance is consistent with amber, though visual identification alone cannot distinguish natural fro…

Identified September 2, 2026More gemstone →

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Physical properties

Formation & geological history

Amber forms when ancient conifer or flowering-plant resin is buried, chemically altered, and polymerized over millions of years; major deposits are Eocene Baltic amber (~34–56 million years old), Dominican amber (~15–20 million years old), and Cretaceous sources elsewhere.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and scientific inclusions; it is also collected as a fossil organic gemstone rather than used structurally.

Geological facts

Amber often becomes electrostatically charged when rubbed and floats in concentrated salt water; copal is younger, softer resin and may soften with solvents or heat.

Field identification & locations

Field clues include very low density, warm feel, low hardness, resinous odor when gently warmed, and possible insect or plant inclusions; avoid destructive tests. Common localities include the Baltic region, Dominican Republic, Myanmar, Mexico, and Indonesia.