mineral
Sunstone / Peach Moonstone (Feldspar variety)
Potassium Aluminum Silicate (KAlSi3O8)
Hardness: 6-6.5 (Mohs), Color: Peach, orange, salmon pink, Luster: Vitreous to pearly, Crystal structure: Monoclinic or Triclinic, contains schiller effect or adularescence
- Hardness
- 6-6
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Physical properties
Hardness: 6-6.5 (Mohs), Color: Peach, orange, salmon pink, Luster: Vitreous to pearly, Crystal structure: Monoclinic or Triclinic, contains schiller effect or adularescence
Formation & geological history
Formed in igneous or metamorphic environments, often crystallizing from cooling magma (pegmatites) or through hydrothermal activity. Found in high-grade metamorphic rocks.
Uses & applications
Primarily used as a gemstone in jewelry (rings, pendants, beads), ornamental carvings, and for metaphysical collecting.
Geological facts
The peach and orange hues are often caused by microscopic inclusions of hematite or copper. Some varieties exhibit a glowing play of light beneath the surface known as adularescence.
Field identification & locations
Identify in the field by its distinct peach-pink color, blocky cleavage planes, and standard feldspar hardness. Common in India, Sri Lanka, Madagascar, and Tanzania.
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