Yellow Calcite is associated with the solar plexus, self confidence and hope.
It is said to be effective at clearing out old energy patterns and increasing personal motivation and drive. Yellow Calcite specifically is a clearer of accumulated self doubt, giving you the opportunity for a clean emotional slate.
It is a powerful energy cleanser amplifier. The energy of Calcite purifies and cleans out negative energy from pretty much anywhere, including within you.
For physical crystal healing calcite is said to be helpful for conditions of the joints, visual disturbances and viruses.