mineral
Rainbow Lattice Sunstone (Matrix)
Orthoclase Feldspar (containing Hematite and Magnetite)
Hardness: 6-6.5 (Mohs scale), Color: Creamy white host rock with iridescent flashes of green, purple, and blue, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect in two directions.
- Hardness
- 6-6
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Physical properties
Hardness: 6-6.5 (Mohs scale), Color: Creamy white host rock with iridescent flashes of green, purple, and blue, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect in two directions.
Formation & geological history
Formed in ancient volcanic environments where thin exsolution lamellae of iron oxides (Hematite, Magnetite) grew within the feldspar host rock. Most specimens originate from the Harts Range in Australia.
Uses & applications
Primarily used as a collector specimen or cut into cabochons for high-end artisan jewelry due to its rare optical effects.
Geological facts
This is one of the rarest gemstones in the world, discovered in 1985. Its unique feature is 'adularescence' combined with a lattice of iridescent triangular or blade-like inclusions.
Field identification & locations
Identified by its distinctive geometric patterns and 'rainbow' flashes within a tan or white feldspar matrix. It is found exclusively in small, remote deposits in the Northern Territory, Australia.
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