gemstone

Polished amber

Amber (fossilized plant resin; primarily organic polymerized terpenes)

AI-generated identification · may be incorrect

Usually Mohs hardness 2–2.5, resinous luster, translucent honey-yellow to brown color, amorphous rather than crystalline, and specific gravity about 1.05–1.10. The rounded, glossy form appears polished or tumbled; internal flow lines and bubbles are typical.

Identified August 25, 2026More gemstone →

Explore Polished amber in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Amber forms when ancient tree resin is buried, polymerized, and chemically altered over millions of years; many deposits are Cretaceous to Paleogene, roughly 20–150 million years old. The specimen’s exact origin cannot be determined from the image.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and collectible specimens; historically used as incense and decorative material. It is generally low-to-moderate value unless exceptionally clear, naturally colored, large, or containing inclusions.

Geological facts

Amber can float in concentrated salt water and becomes electrostatic when rubbed. A warm-needle test may produce a pine-like odor, but it can damage the specimen and is not recommended.

Field identification & locations

Common sources include the Baltic region, Dominican Republic, Mexico, Myanmar, and Indonesia. Field clues include very low density, warm feel, resinous appearance, and visible bubbles or organic inclusions; confirm carefully because dyed glass and plastic imitations are common.