Unusual Tourmaline crystal -
Teófilo Otoni, Mucuri valley, Minas Gerais, Brazil
The crystal of very dark blue-black Tourmaline measures to 8.4cm striated, with a multi faced termination, but the intriguing parts are the four holes through the tourmaline. These could have been created by the tourmaline’s growth around a pre-existing mineral, possibly feldspar, that has since been naturally dissolved away, leaving the novel crystal formation. An unusual find in the world of tourmaline.