Blue lace agate, also known as blue calcedony, is a gentle and mild calming stone, that brings us gentleness and grace. It reduces all anger feelings (even deep in the subconciousness) and fear of death. It brings peace, inspiration and increases the ability to communicate clearly, helping to explain our truth peacefully and with dignity. One of the best stones to open the throat chakra.
Flat stone suits the best for healingwork, because it covers the chakra and the contact surface are is the largest. Also it will not fall off the body and is large enough to draw forth energetic and physical changes. Flat stones are also the best to carry in your pocket.