Home / Whitby Jet / Whitby Jet And Silver Tree Of Life Whitby Jet And Silver Tree Of Life£32.00 A 19mm diameter sterling silver tree of life charm set with a disc of Whitby Jet, mounted on a 46cm sterling silver chain. The Whitby jet backing disc has been fine smooth finished and polished to a deep black shine. Whitby Jet is a warm and sensuous gemstone which is formed from the fossilised remains of Jurassic age monkey puzzle trees. 19x4mm Buy Now Category: Whitby Jet Description Description This item is handmade by the seller. All the Whitby jet used is responsibly sourced and is found on the beach here at Robin Hood's Bay and is worked in the village.