Rock Identifier
Ambergris (Ambergris (Coprolite-adjacent organic substance)) — Organic (Geological interest)
Organic (Geological interest)

Ambergris

Ambergris (Coprolite-adjacent organic substance)

Hardness: 1-2 (Mohs), Waxy/fatty texture, Color: Dark brown to black (fresh) to light grey/tan (aged), Luster: Dull or waxy, Specific Gravity: 0.78-0.92 (floats in water)

Luster
Dull or waxy, Specific Gravity: 0

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Physical properties

Hardness: 1-2 (Mohs), Waxy/fatty texture, Color: Dark brown to black (fresh) to light grey/tan (aged), Luster: Dull or waxy, Specific Gravity: 0.78-0.92 (floats in water)

Formation & geological history

Produced in the digestive system of sperm whales (Physeter macrocephalus). It forms around indigestible squid beaks. It ages for years or decades floating in the ocean through exposure to salt water and UV light.

Uses & applications

Historically used in high-end perfumery as a fixative for scents and as a rare flavoring agent; highly valued by collectors of 'ocean gold'.

Geological facts

Often called 'floating gold'. Fresh ambergris has a fecal odor, but as it ages, it develops a sweet, earthy, and marine scent. Despite its origin, it is used in expensive luxury fragrances like Chanel No. 5.

Field identification & locations

Identify byIts low density (it must float), waxy feel, and unique reactions to heat (it melts at 62°C into a dark liquid). It often contains small embedded squid beaks and is found on beaches globally after storms.