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Optical Calcite (Iceland Spar)

Iceland Spar, Icelandic Spar

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Optical calcite, historically Iceland spar, is transparent calcite (CaCO3) showing double refraction. It is a variety/use identity of calcite, not a separate mineral. Do not imply Iceland provenance unless documented. The parent Calcite catalog entry already exists. Collectors may keep it for study and display. It is not medical care.

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Crystal meanings are shared for educational and inspirational purposes and reflect traditional beliefs and metaphysical associations. They are not medical or psychological advice and are not intended to diagnose, treat, cure, or prevent any condition.

Photos are visual references for the named crystal or material. They are not a laboratory authentication of the photographed specimen.

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