Description

Labradorite crystals with a changing play of colors.
At certain angles, the stone is blue, at others gray.
The phenomenon is called the Schiller effect of adularescence: it is due to interference of light rays in the inner layers of labradorite.
Another historic specimen, delivered with its box and handwritten label of origin, a mineral species from the Labrador Coast in northern Canada. Specimen from the De Chalendar collection, a family of industrialists who built up a mineralogical collection focusing on iron, manganese and other ores in the 19th and 20th centuries.

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