Preseli bluestone is a form of dolerite from the Preseli Hills in West Wales and is notable in that it is the source for much of the stone that makes up the inner circle of the sacred site of Stonehenge, hundreds of miles to the East. It is considered a sacred stone and a conduit to the Merlin. This spectacular piece of jewelry was designed in the magical town of Glastonbury England, home to the ancient Tor and the Chalice Well.