Rock Identifier
Amber (Fossilized Tree Resin) — gemstone
gemstone

Amber

Fossilized Tree Resin

Hardness: 2-2.5 on Mohs scale. Color: Yellow, orange, brown, occasionally reddish or greenish. Luster: Resinous to greasy. Crystal structure: Amorphous (non-crystalline). Specific gravity: 1.05-1.10 (floats in saltwater).

Hardness
2-2
Color
Yellow, orange, brown, occasionally reddish or greenish
Luster
Resinous to greasy
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Physical properties

Hardness: 2-2.5 on Mohs scale. Color: Yellow, orange, brown, occasionally reddish or greenish. Luster: Resinous to greasy. Crystal structure: Amorphous (non-crystalline). Specific gravity: 1.05-1.10 (floats in saltwater).

Formation & geological history

Formed from the fossilization of tree resin, typically originating from coniferous trees, over millions of years (ranging from carboniferous to quaternary, mostly Cretaceous to Neogene).

Uses & applications

Used in jewelry, ornamental carvings, and scientific research due to preserved inclusions (insects, flora).

Geological facts

Amber is famous for preserving ancient insects, plant matter, and even small vertebrates in near-perfect detail, providing vital clues about prehistoric ecosystems.

Field identification & locations

Found worldwide, most notably in the Baltic region (Baltic amber), the Dominican Republic, Mexico, and Myanmar. It can often be identified by its low specific gravity, warm touch, and electrostatic properties when rubbed.