gemstone

Likely rough amber

Amber (fossilized tree resin; composition varies, commonly dominated by polymerized terpenoids)

AI-generated identification · may be incorrect

Small, translucent honey-brown piece with a resinous to waxy luster and irregular fracture; hardness about 2–2.5 Mohs, amorphous (no crystal structure), specific gravity roughly 1.05–1.10. The image alone cannot confirm amber; similar-looking minerals or synthetic resin are possible.

Identified October 12, 2026More gemstone →

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Physical properties

Formation & geological history

Formed when ancient tree resin polymerized and fossilized in sediment; amber deposits span many geological ages, with Baltic amber chiefly Eocene, about 34–56 million years old.

Uses & applications

Used for beads, carvings, and jewelry; also collected for inclusions and scientific study.

Geological facts

Amber is fossil resin rather than a mineral and may preserve insects or plant material.

Field identification & locations

Check for low density, warm feel, and static charge when rubbed; avoid destructive tests, since plastics and copal can imitate amber. Found in sedimentary deposits, notably around the Baltic region and the Dominican Republic.