Icelandic spar (Calcite), Berufjordur, Iceland.

45,00

Magnificent small crystal of birefringent calcite from Berufjordur in Iceland.
Icelandic spar is a transparent variety of calcite. Birefringence is the physical property of a material in which light propagates anisotropically. A spectacular effect of birefringence is the double refraction by which a light ray penetrating the crystal is split in two. This is the case here.

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