Silver Whitby Jet Blue John Double Sided Stone Flip Ring. R1043. This sleek and contemporary two stoned flip ring features highly polished, hand carved Whitby Jet on one face and on the reverse side, a unique piece of Derbyshire Blue John, all set into a simple sterling silver frame. Simply rotate the frame for a different look. This ring would make the perfect addition to any gemstone lovers collection. 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 bangles on our website. Silver Whitby Jet Blue John Double Sided Stone Flip Ring.