Optical Calcite / Iceland Spar Crystal

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Optical Calcite / Iceland Spar Crystal

Size: 65x45x20mm

Calcite is transparent to opaque and may occasionally show phosphorescence or fluorescence. A transparent variety called Iceland spar is used for optical purposes. Single calcite crystals display an optical property called birefringence (double refraction). This strong birefringence causes objects viewed through a clear piece of calcite to appear doubled.


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