Opal and diamond ring

The oval cabochon opal weighing 25.69 carats, framed by small round diamonds, the sides and band further decorated with small round diamonds, the total diamond weight approximately 1.80 carats, mounted in platinum, size 6.

Very good condition. The opal presents a moderately-strong play-of-color of blue, green and violet. The accompanying GIA report states that the opal is semi-transparent to translucent dark gray and measures approximately 27.45 by 15.60 by 10.35 mm. Diamonds are approximately H-I color, VS clarity.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. 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. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

Accompanied by GIA report no. 15682925 stating that the opal is natural, natural color.