gemstone

Tumbled amber or yellow chalcedony

Uncertain; likely quartz chalcedony (SiO₂), possibly natural amber (fossilized resin)

AI-generated identification · may be incorrect

Small, rounded, translucent honey-yellow specimen with a waxy to glassy luster. Chalcedony has Mohs hardness 6.5–7 and no cleavage; amber is much softer (2–2.5), very light, and may float in saturated salt water.

Identified August 16, 2026More gemstone →

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Physical properties

Formation & geological history

If chalcedony, it formed when silica-rich groundwater filled cavities or fractures, commonly in volcanic rocks; if amber, it formed from fossilized tree resin, often Cretaceous to Cenozoic in age. The smooth shape indicates natural abrasion or tumbling.

Uses & applications

Used as a cabochon, bead, carving, or inexpensive collector specimen; chalcedony is also used decoratively and in ornamental stonework. Amber is valued for jewelry and inclusions.

Geological facts

The image alone cannot reliably distinguish amber from chalcedony. Amber is warm to the touch, electrostatic when rubbed, and may show resin flow lines or inclusions; chalcedony feels denser and scratches glass.

Field identification & locations

Common chalcedony occurs worldwide, especially in volcanic regions; amber is notable from the Baltic region, Dominican Republic, Myanmar, and Mexico. Avoid destructive tests; compare specific gravity and hardness on an inconspicuous area.