£2,000 - £3,000
A large black opal and diamond cocktail ring, featuring an oval cabochon of a black opal of 31.0 x 21.8 x 7.0 mm, displaying strong play-of-colour mostly ranging from green to purple, on an opaque dark grey ground, set to a diamond-encrusted mount leading to a grooved shank, white metal marked '18K 750', size N, 20.2 grams.
Fees apply to the hammer price:
Free Registration
33.6% inc VAT*
Flat Fee Registration
30.00% inc VAT*