Calcite fire. The Calcite crystal stone meaning can be traced back to ancient Greece, where it came from the Latin word calc, meaning 'lime.' Also known as the Dog Tooth variety, this is another less common structure that they occur in. The various colors that occur in these crystals, relate to the addition of different minerals in the stone. It is a carbonate mineral. These crystals are recognized for their action to clear blockages and to aid the removal of negative energy from the body, and they assist with the elimination of sluggish energy. Calcite connects the emotions with the intellect. It is an excellent stone when studying the arts and sciences. It calms the mind, teaches discernment, stimulates insights, and boosts memory. The two most popular varieties of Calcite are green and orange, and when combined together they really up the ante when it comes to magnifying the stones around it. Having a large piece of calcite in a room is advantageous, as it will clear negative energy in the area close to where it is located. These crystals are powerful to remove negativity, both from the environment and from the body.