gemstone

Amber

Fossilized tree resin (predominantly cross-linked terpenoid polymers)

AI-generated identification · may be incorrect

Honey-brown translucent material with resinous luster and conchoidal fracture; Mohs hardness about 2–2.5, very low density (about 1.05–1.10), and no crystal structure or cleavage. The specimen appears rough and naturally fractured, though exact identification is limited by the image.

Identified September 21, 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 hardened over millions of years, commonly in Paleogene deposits (roughly 2–66 million years old). Major sources include the Baltic region, Dominican Republic, Myanmar, Mexico, and Indonesia.

Uses & applications

Used for carved ornaments, beads, cabochons, decorative objects, and scientific inclusions; it is generally not used as construction stone.

Geological facts

Amber can preserve insects, plant fragments, and air bubbles. It becomes electrostatically charged when rubbed and may float in concentrated salt water; copal is younger, softer resin that can resemble amber.

Field identification & locations

Identify by its lightweight feel, warm resinous appearance, conchoidal fracture, static charge, and possible fluorescence under UV; avoid testing valuable pieces with heat or solvents. Common rough specimens sell for about $5–$40, while clear, large, or inclusion-rich pieces may range from $100 to thousands.