Throat Chakra Essence: Blue Sapphire - Archangel MichaelArchangel Michael's energy comes into the blue sapphire with his blue shield of protection and blue sword of truth. Blue Sapphire addresses the throat chakra and is about communication and self expression. It is about listening as well as speaking. There is mental discrimination, enlightened intuition. We choose the thoughts we think. Blue Sapphire aligns our energy with our purpose and opens us to our spiritual nature.