Blue Angel Aura Quartz or Aqua Aura Quartz is clear quartz that has undergone a heat treatment with metallic alloys like gold, silver and platinum that gives this iridescent sheen. Retains the properties of quartz such as being a master healing stone, amplifying and cleansing but is also good for lifting depression, bringing hope, peace, and levity. As a cluster this one gathers energy to you with strength and can help with working in groups of people like at home or work. About 2 in. in length.