Victorian Carved Jet Beads Necklace with Jet Clasp (584F) | The Antique Jewellery Company
Antique Victorian Whitby Jet Choker Necklace at 1stDibs
Antique Whitby Jet Necklace. Sterling Jet Necklace. 19 1/8 - Etsy Hong Kong
Gorgeous Whitby Jet Necklace - On Solid Silver Chain.
Derbyshire Blue John Jewellery Small Round Double Sided Fob With Blue John & Whitby Jet, on an 18" Spiga Chain - Silver from Avanti of Ashbourne Ltd UK