Optical Calcite, also known by Ice Calcite and Rainbow Calcite, comes fittingly from Iceland. It is also sometimes referred to as “Icelandic Spar,” and it is said that the Vikings used it to navigate the seas having been able to find the Sun by looking through it towards the cloudy skies. In this way it is seen as a protection stone for travelers. Looking through this transparent Calcite, it is said you can look into other realms, namely, the faerie realm. It is known to cleanse the aura of negativity and help to clear trapped energies from the body; promoting emotional healing and inner-joy. Placing it over the eyes is said to heal tension and strain.