
Organic (Pseudo-geological)
Ambergris
Ambrein-rich Calculus
AI-generated identification · may be incorrectHardness (0.5-2.0), Waxy/tacky texture, greasy luster, color ranges from black/brown to grey/white, insoluble in water, melts at 62°C.
Identified More organic (pseudo-geological) →
Explore Ambergris in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness (0.5-2.0), Waxy/tacky texture, greasy luster, color ranges from black/brown to grey/white, insoluble in water, melts at 62°C.
Formation & geological history
Produced in the digestive system of sperm whales (Physeter macrocephalus). It forms around indigestible giant squid beaks; once expelled, it floats in the ocean and undergoes oxidation for years or decades.
Uses & applications
Historical use in high-end perfumery as a fixative (extending scent duration) and ingredient in ancient medicines or flavoring.
Geological facts
Often called 'floating gold' because it is extremely rare and valuable. Over time, its smell changes from fecal to a sweet, earthy, or musk-like aroma.
Field identification & locations
Look for a waxy, stone-like object that floats in salt water (unlike most rocks) and reacts to a hot needle test by melting into a dark liquid or producing white smoke.
More like this
Other organic (pseudo-geological) specimens
Ferruginous Sandstone Concretion (Ironstone Phosphorite)
Ferruginous Sandstone (variable Fe-oxide/hydroxide composition)
sedimentary
Banded Sedimentary Rock (Siltstone/Mudstone with concretion)
Siltstone with Ferruginous Banding
sedimentary
Ironstone Concretion
Ironstone (primarily Siderite or Limonite)
sedimentary
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Aragonite
Aragonite (Carbonate mineral), CaCO3
mineral
Azurite in Gossan
Azurite (Cu3(CO3)2(OH)2) in Limonite/Goethite matrix
mineral