Blue Obsidian Tumblestone

Blue Obsidian is a gorgeous almost transparent stone, actually a volcanic glass, believed to be the stone of purification and transformation. 

Physical: Aids digestion, detoxifies and assists with arthritis  

Emotional: Helps with communication, calms the mind

Spiritual: Deflects negative energies.  

Blue: Throat chakra 

Each crystal is different, so appearance and size will vary