Brazilian optical calcite is particularly notable for its birefringence, or double refraction, which causes light to be split into two separate rays as it passes through the crystal. This results in a fascinating optical illusion, where an object viewed through the crystal appears to be doubled.

The optical calcite cubes from Brazil are highly valued by mineral collectors and scientists due to their exceptional clarity and transparency. Brazilian optical calcite cubes are also known for their beauty, and many people display these cubes as decorative objects. You will receive the exact one high-grade Brazilian Optical Calcite you selected. Pls note that Optical calcite is a very soft mineral, and very easy to get scratched, so handle it with care. 

Size: 65x50x32mm, This one is chipped on the corners, reduced accordingly.
Weight: 260g

Optical Calcite, also called Clear Calcite or Iceland Spar, works to clear and activate all of the Chakras to improve 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 to bring more optimism into our experiences.