Rock Identifier
Polished amber-like resin specimen (Likely copal or amber (fossilized plant resin), possibly with a dark inclusion) — gemstone
gemstone

Polished amber-like resin specimen

Likely copal or amber (fossilized plant resin), possibly with a dark inclusion

AI-generated identification · may be incorrect

Honey-white to yellow-orange, translucent, resinous luster, amorphous rather than crystalline; Mohs hardness about 2–2.5 for amber and 1.5–2 for copal; very low specific gravity (~1.05–1.10). The dark portion may be a natural inclusion or a separate resin piece.

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Physical properties

Honey-white to yellow-orange, translucent, resinous luster, amorphous rather than crystalline; Mohs hardness about 2–2.5 for amber and 1.5–2 for copal; very low specific gravity (~1.05–1.10). The dark portion may be a natural inclusion or a separate resin piece.

Formation & geological history

Amber formed when ancient plant resin polymerized and fossilized over roughly 20–300 million years, commonly in sedimentary deposits; copal is younger, generally less than a few million years old. The image alone cannot establish age or distinguish amber from copal confidently.

Uses & applications

Used for beads, carvings, jewelry, ornaments, and scientific inclusions; high-quality transparent amber containing insects can be valuable.

Geological facts

Amber often floats in concentrated salt water, becomes electrostatically charged when rubbed, and softens or emits a pine-like odor when gently warmed; destructive tests should be avoided.

Field identification & locations

Common sources include the Baltic region, Dominican Republic, Mexico, Myanmar, and Colombia. Check for lightweight feel, warm touch, fluorescence, and natural inclusions; professional spectroscopy is needed for confirmation.