These whitby jet round ball stud earrings created from pieces of highly polished genuine whitby jet selected cut and set on sterling silver postes with butterfly backs are the perfect earrings for any occassion timeless and elegant these earrings make a great gift and a must for any jewellery boxour whitby jet jewellery is lovingly made by hand in the derbyshire workshops of family run jewellers c w sellors using genuine whitby jet a deep black highly polished gem derived from fossil wood f