Sapphire and diamond ring

Of cluster design, claw-set with an oval sapphire within a frame of brilliant-cut diamonds, size M^1/2, British hallmarks.

Accompanied by Gübelin report no. 13050130, stating that the sapphire is of Ceylon origin, with no indications of heat treatment. British hallmark for 18 carat gold, Sheffield on shank. Maker's mark BHF. Sapphire light violet-blue in colour, transparent, with typical inclusions visible under magnification, measuring approximately 15.4 x 11.8 x 9.0mm, calculated to weigh approximately 13.08 carats. Diamonds estimated to be approximately H - I colour, VS - SI clarity on average, estimated total diamond weight approximately 2.00 - 3.00 carats. Light scratches to metal surfaces consistent with wear. In 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.
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 Gübelin report no. 13050130, stating that the sapphire is of Ceylon origin, with no indications of heat treatment.