Wild Life Trust Collection Necklace Bat Silver. 00107399. This fun and quirky necklace is part of our Wildlife Trust collection and boasts two delicate pieces of the finest Whitby Jet stone sourced directly from the north east coast of Yorkshire. The stones are set within the striking eyes of the sterling silver bat design that hangs gracefully from a delicate silver chain. 15% of all the Wildlife Trust jewellery sold goes to help the Derbyshire Wildlife Trust. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen turn the raw Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet necklaces on our website. Sterling Silver and Whitby Jet.