Hi ... this is significant. ! I'm a fossil hunter working the North Norfolk Coast Mundesley through to West Runton. Nov 2013 East Runton amongst the chalk raft and stones and largely hidden....... I found a extremely large piece of Jet. I have many small pieces , match box size. This is 24x8x4 cm. This on size ... is significant and very rare to find a piece of this size. The usual streak and pin burn tests confirm. Please advise as to its significants..