Diamonds promise forever love, but the first synthetic 'forever' belonged to jet. When Victorian demand for Whitby jet outpaced supply, the quest for a substitute led to plastic.

Sarah Caldwell Steel- curator of jet at Whitby Museum- fell in love with Whitby jet at seven. With over forty years of commercial lapidary experience, a geology degree, and fellowships of the gemological association, she is now the leading authority jet.