fossil

Amber (Sumatran / Indonesian Red Blue)

Succinum (Fossilized Tree Resin)

Hardness: 2.0-2.5 on Mohs scale. Color: Deep reddish-orange under transmitted light, often showing a blue/green fluorescence under UV or natural light. Luster: Resinous. Structure: Amorphous. S.G.: 1.05-1.10.

Hardness: 2
Luster: Resinous

Identified July 3, 2026More fossil →

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Physical properties

Formation & geological history

Fossilized resin from prehistoric trees, specifically the Hymenaea protera genus. These Sumatran deposits typically date to the Miocene epoch (approx. 15-25 million years ago).

Uses & applications

Used primarily in jewelry (cabochons, beads), decorative carvings, and for metaphysical collections. Highly valued when exhibiting strong fluorescence.

Geological facts

Unlike Baltic amber, Sumatran amber is found in coal seams. It is famous for its 'blue' variety, which appears reddish-brown by transmitted light but exhibits intense blue surface fluorescence.

Field identification & locations

Identified by its extreme lightness (will float in saturated salt water), warm feel, and electrostatic properties when rubbed. Often found in South Sumatra, Indonesia.

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