Two diamond rings, 'Oya-Kuli and Ushindi', de Beers

Each designed as an African mask, set with brilliant-cut and rough unpolished diamonds, size J^1/2 and N, each signed De Beers and numbered.

Ushindi Ring: Diamonds stated to weigh 2.49 carats in total, colour K+ Colour, SI+ Clarity, one diamond Fancy Brown, SI+ clarity. Rough diamonds of greyish black tint. Oya-Kuli Ring: Diamonds stated to weigh 0.95 carats, colour K+, SI+ Clarity. Rough diamonds of near colourless tint. Each stamped 750 for 18 carat gold. Signed De Beers. Numbered A59384 and A59558. In very good condition.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones and to the Notice regarding import of Burmese jadeite and rubies into the US.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Accompanied by two De Beers passports.