Calcite is a powerful amplifier and cleanser of various types of energies. Clear (Iceland Spar) variety displays an optical illusion called double refraction - when you look through the crystal, it splits the light rays in two, producing a double image. For this reason, it is often used in magic rituals to double the power of a magic spell.
Optical calcite amplifies images and helps you to see double meanings hidden in communication.
Healing properties of Clear Calcite
- Reduces tension
- Heals the eyes
- Relief for migraine headaches
Calcite stimulates the Fire Element to assist in moving blocked energy through the chakras. 
Also called Iceland Spar, Optical Calcite works to clear and activate all of the chakras, improving the flow of energy throughout the subtle bodies. Use Optical Calcite to clear away negative energy, and to amplify positive energy, and specifically, to help remove fear-based emotions, bringing more optimism into one's experience.
Optical Calcite is helpful for those in need of clarity, and those who are learning about Law of Attraction and manifestation. Like Clear Quartz, Optical Calcite can amplify intent, and can be programmed for a specific purpose. Optical Calcite can help one to see past errors and ways to correct them for benefit in the future. By clearing away stagnant energy blockages, Optical Calcite can bring higher energies into the chakras, encouraging spiritual development.
Physically, Optical Calcite can be used to relieve migraines; helps with eye problems. Used with other crystals, Optical Calcite will often double the healing effects.
You can read a newspaper through Optical Clear Calcite! You’re not seeing double when you look through them, though; when light passes through this transparent Calcite it bends two ways, making images appear double. Optical Calcite naturally form parallelogram shapes, making them excellent pieces for energy grids.