gemstone
Ametrine
Quartz (SiO2 with Fe impurities)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, distinct purple and yellow/orange zones, vitreous luster, trigonal crystal system, conchoidal fracture.
Identified More gemstone →
Explore Ametrine in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on Mohs scale, distinct purple and yellow/orange zones, vitreous luster, trigonal crystal system, conchoidal fracture.
Formation & geological history
Formed in hydrothermal veins within igneous rocks, where differing oxidation states of iron create zoned amethyst and citrine areas.
Uses & applications
Used primarily in high-end jewelry, carvings, and as collectible mineral specimens.
Geological facts
Also known as trinidadite, nearly all commercial ametrine originates from a single mine in Bolivia, the Anahi Mine.
Field identification & locations
Easily identified by its natural bicolored zoning of purple and yellow. Commonly sourced from South America.
More like this
Other gemstone specimens
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Topaz
Al2SiO4(F,OH)2
mineral
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary