It is said to be effective at clearing out old energy patterns and  increasing personal motivation and drive.  It is also known as a mind stone as it  heightens mental discernment and analysis, increases memory and the ability to learn quickly and efficiently, great to have on your desk during revision/tests etc.  Calcite is by far the the best stone for anyone studying.

Calcite is also good during times of disagreements as it can show you a new way to look at a situation, easing you away from outdated thought patterns making space for new inspiration and ideas