gemstone
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, pink to orange-red color with a characteristic metallic glitter (aventurescence), and triclinic crystal system.
Identified More gemstone →
Explore Sunstone in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6-6.5 on the Mohs scale, pink to orange-red color with a characteristic metallic glitter (aventurescence), and triclinic crystal system.
Formation & geological history
Formed as an igneous or metamorphic mineral, often crystallizing within basaltic or granitic magmas over millions of years.
Uses & applications
Used primarily in lapidary arts, carved decorative objects, and fine gemstone jewelry.
Geological facts
The optical glitter effect is caused by microscopic copper or hematite platelets reflecting light within the stone.
Field identification & locations
Identify by its distinct reddish-orange body color and sparkling schiller effect; commonly sourced from Oregon, USA, and Norway.
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
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Pearl necklace
Pearl, primarily aragonite (CaCO₃) and conchiolin
gemstone