Icelandic spar is a transparent variety of calcite, so all physical properties are the same. The only difference in this crystal is the dual refraction of light rays. The Vikings have called this crystal a "sunstone" and used it as a navigator. When sailing on trips, they were always able to find the sun, regardless of weather conditions, due to the polarising properties of the mineral's light.
This crystal will encourage you to become a better version of yourself. By meditating with it, you will activate the chakra of the third eye. It's like an inner compost that will help you focus on your life and the outside world. You will become open to new ideas and opportunities, and you will be able to accept the information sent to you by higher forces that will help transform your life and fill it with a state of inner happiness and peace.
Icelandic spar will give you clarity and insight. It will activate your logical thinking, creativity and intuition. It will help you in all life situations, especially dealing with issues that may prevent you from moving forward. You will understand their root causes and thus be able to change the current situation from the ground up.