Rock Identifier
Amber (Fossilized tree resin) — gemstone
gemstone

Amber

Fossilized tree resin

Hardness: 2-2.5 on the Mohs scale, Color: Yellow, orange, brown, sometimes reddish or green, Luster: Resinous, Crystal Structure: Amorphous (non-crystalline), Cleavage: None, Specific Gravity: 1.05-1.10

Hardness
2-2
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Physical properties

Hardness: 2-2.5 on the Mohs scale, Color: Yellow, orange, brown, sometimes reddish or green, Luster: Resinous, Crystal Structure: Amorphous (non-crystalline), Cleavage: None, Specific Gravity: 1.05-1.10

Formation & geological history

Formed from the fossilization of tree resin, typically originating from coniferous trees, over millions of years (ranging from carboniferous to sub-recent, most commonly Eocene/Oligocene).

Uses & applications

Used primarily in jewelry, decorative items, and historically in traditional medicine. Highly valued by paleontologists for containing preserved inclusions of ancient insects and plant matter.

Geological facts

Amber can sometimes float in saltwater. It can also produce static electricity when rubbed against cloth, a property noted by the ancient Greeks who called it 'electron'.

Field identification & locations

Identified by its low density, warm feel compared to glass, and characteristic resinous odor when heated. Found worldwide, with major deposits in the Baltic region and the Dominican Republic.