Agate is known to stabilise the aura eliminating negative energy.  It comes in many colours which you purchase from our site.  The crystal is known to help overcome negativity and any bitterness or trauma you may be experiencing. Blue dye is added to the stone during the tumbling process to enhance the connection to the throat chakra
The size and shape your receive may differ slightly from the image shown. 
Each stone weighs approximately 10-15g.