Blue Tourmaline 10mmBlue Tourmaline is considered the rarest color of Tourmaline and sourced mostly in Brazil. Blue Tourmaline is the rarest because it requires a very specific balance of trace elements (iron + sometimes copper) to naturally occur to get this special gemstone. It can help soothe anxiety, overwhelm, and emotional turbulence. Its known as the stone of Clarity, because it encourages clear thinking, rational decision making, and better focus. Blue Tourmaline