Amber with Organic Inclusions

Physical Properties

Hardness: 2.0–2.5 Mohs scale; Color: Yellowish-brown to honey-orange; Luster: Resinous; Crystal structure: Amorphous; Cleavage: None; Specific gravity: 1.05–1.10 (very light, can float in salt water).

Formation & Geological History

Formed through the polymerization and fossilization of tree resin over millions of years (usually Eocene to Cretaceous). Often found in marine deposits where resin was fossilized in low-oxygen environments.

Uses & Applications

Used primarily in jewelry (cabochons, beads), decorative arts, and scientific study (paleontology) if it contains preserved insects or plant matter.

Geological Facts

Amber is technically a mineraloid rather than a mineral because it is organic and lacks a crystalline structure. It is famous for preserving delicate cellular structures of prehistoric life for tens of millions of years.

Field Identification & Locations

Identify in the field by its light weight and warmth to the touch compared to stone. It will develop a static charge when rubbed with wool and may glow under UV light. Common in the Baltic region, Dominican Republic, and Myanmar.

Identified on: 4/27/2026

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