Up to 1". The meaning of Blue Agate is calmness. Blue agate is known as a talisman with great healing energies. It is said to release tension and to relax. Blue Agate harmonizes your energies. Banded Agate is seen as a healing stone of calm, good luck and wealth. It tends to have a gentle energy that works on the subtle bodies and energies, to help achieve stability and balance in many aspects of one's life. also associated with the throat Chakra, Blue agate will assist you in speaking your truth in a calm and compassionate way.