Natural Black Pearls

[Valeria101]

The Pendant is called "Farnham's Black Pearl Pendant" and was exhibited at the 1889 Paris Exposition.

... along with a white pearl version built in the same spirit (i.e. the overall shape and the neat trick of layering panels to accommodate the depth of the pearls) that made it into the 'Bejeweled by Tiffany' exhibition recently!

LINK to pictures

I don't think there ever was a book of Farnham Pearls, but there should be... I think.