Rock Identifier
Amber (Fossilized Tree Resin) — gemstone
gemstone

Amber

Fossilized Tree Resin

Hardness of 2 to 2.5 on the Mohs scale, colors range from yellow, orange, and brown to rare blue and green, resinous to vitreous luster, amorphous crystal structure, no cleavage, and a specific gravity of 1.05 to 1.10.

Identified More gemstone
Explore Amber in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Hardness of 2 to 2.5 on the Mohs scale, colors range from yellow, orange, and brown to rare blue and green, resinous to vitreous luster, amorphous crystal structure, no cleavage, and a specific gravity of 1.05 to 1.10.

Formation & geological history

Formed from the fossilization of tree resin, typically originating from coniferous trees, over millions of years (often Cretaceous to Tertiary periods, 30 to 90+ million years ago).

Uses & applications

Used widely in jewelry, decorative items, carving, and sometimes in scientific research due to trapped inclusions like insects and plant matter.

Geological facts

Amber floats in saltwater, can produce static electricity when rubbed, and historically amber necklaces were believed to have medicinal and protective properties.

Field identification & locations

Found globally in regions such as the Baltic Sea coast, the Dominican Republic, Mexico, and Myanmar. Identified easily by its warm touch, low specific gravity, and characteristic resin scent when heated.