How to test Whitby Jet pieces picked up from the seashore.
After the recent storm we headed to the beach to see if any pieces of Whitby jet had been washed up. We found a few sea washed pieces and made a short video to show how to test the quality of the jet.
If chalked on a piece of sandstone the best quality Whitby jet should leave a light brown/ginger mark. This is the only jet we ever use in our jewellery. Poor quality Jet will leave a dark brown mark. Pieces of sea coal will leave a black mark.