Amber

Physical Properties

Hardness: 2.0-2.5 on the Mohs scale; Color: Honey-yellow to orange-brown; Luster: Resinous; Crystal structure: Amorphous; Cleavage: None; Specific gravity: 1.05-1.09 (floats in salt water).

Formation & Geological History

Formed through the fossilization of tree resin over millions of years. Most specimens are from the Cretaceous or Tertiary periods (approx. 30 to 90 million years old). Found in sedimentary environments.

Uses & Applications

Used primarily in jewelry, decorative arts, and as a medium for scientific study (when it contains inclusions like insects or plant matter).

Geological Facts

Amber is organic, not a true mineral. It is famous for preserving delicate DNA and fossils from millions of years ago, often trapping air bubbles or prehistoric life forms.

Field Identification & Locations

Identify by its low weight (feels light for its size) and its ability to float in a saturated salt water solution. Use a 'static test' by rubbing it on wool to see if it attracts hair or paper pieces.

Identified on: 4/18/2026

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