Optical Calcite, (Sun Stone) Iceland Spar.

Optical Calcite, (Sun Stone) Iceland Spar.

Vikings' legendary sólarsteinn (Sunstone) mentioned in the 13th-century Viking saga of Saint Olaf. was used by the Vikings to navigate without a compass.

Now scientists have proved that using the polarising effect of Optical Calcite (Iceland Spar) you can place the suns position within 5 degrees allowing the Vikings to cross oceans without a magnetic compass even in fog or cloud.

Prices start from £5 for a small cube all the way to £85 for a large Golden Optical Cube

Calcium Carbonate CaCo3

Hardness: 3

Source: Mexico

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