A while back in a book on pearls I stumbled across this necklace. It was new to me and I thought it might be appreciated by people here. I can't seem to find any photos of the Duchess of Portland wearing this piece, but pearl necklaces are often hard to distinguish.
Natural pearl necklace c1662-94. This necklace was once owned by Queen Mary II of England and was given to Winifred, Duchess of Portland and has stayed in the family ever since.