An American Art Deco diamond and onyx plaque pendant

An American Art Deco diamond and onyx plaque pendant,
with a brilliant cut diamond, rub set to the centre of a lozenge-shaped onyx plaque. An elongated hexagonal frame with sunray pierced decoration, milligrain set with graduated old eight cut and old brilliant cut diamonds. A later 'V' shaped bale with an integral 18ct white gold three row trace chain, with hoop sections and a side lever clasp. 54 x 30mm including bale, 22.30g
Estimated at £1,200 - £1,500

Condition report:
A brooch later converted to a pendant.
Centre diamond probably a replacement.
Plaque tested as approximately 18ct white gold.
Bale tested as 9ct white gold