65 gram sphere of Preseli bluestone
Preseli Bluestone is found in the Preseli Hills located in Pembrokeshire in western Wales. Preseli Bluestone is spotted Dolerite that contains clusters of feldspar
Curiously, it is found 200km away from where it is quarried at the Stonehenge site and was transported by ancient peoples to form the first ring at the Stonehenge site before the Sarsen stones were erected!