How does a rock do that?!
Blue Calcite soothes and relaxes the emotional body. This stone is known to calm emotions and offers mental and etheric protection, or in other words, it protects the "human energy field" or aura, which is the energy field in immediate contact with the physical body. When you carry or wear Blue Calcite, it acts as a sponge and absorbs all energy coming to you. It filters out the negative vibrations and transmutes or transforms it back into high positive energy.
You might ask, "How does a rock do that?!"
Let's think of it this way. Imagine you are sitting outdoors at a coffee shop having a lovely conversation with your friend. In the distance, you hear a fire truck. Its sound gets louder and louder and pretty soon the conversation stops and all eyes are on the fire truck. Those firemen are going to a tragedy, be it a medical call, a vehicle accident, or a structure fire. Your heart clenches, your ears hurt, and you are saddened at what these firefighters must now face. A good number of people react that way. However... there are a few people who take that sight and sound, and based on their experience and natural wiring, get extremely excited to see and hear the sights and sounds. Their blood pumps, their psyche comes to full alert, and they take what most see as a tragic moment, and it becomes the most exciting moment of their day. Ex-volunteer firefighters are like that. We aren't weird or anything, its just who we are. Now back to Blue Calcite.
During its time in the earth, Blue Calcite gained its unique energy pattern by all the stress and strain of its existence. It gained properties that enable it to take the low vibrational negative energy of a situation and react to it in a completely different way. Blue Calcite will take the negative energy it finds and transmute (transform) it to high vibrational energy just like an ex-volunteer firefighter becoming giddy at seeing and hearing a firetruck.

Blue Calcite has many beneficial effects for anyone who suffers from anxiety or depression. Its calming blue color soothes and relaxes nerves. It’s calming effect on the mind allows the holder to think about emotional situations with a more calm, level head and opens a strong communication channel between your thoughts and feelings.