Emerald and diamond ring

The square emerald-cut emerald weighing 16.72 carats, flanked by 2 trapezoid step-cut diamonds each weighing 1.61 carats, mounted in platinum, size 6.

Very good condition. The emerald is a deep bluish green and lightly included. See AGL report no. CS 38984 stating that the emerald is of Classic Colombian origin; clarity enhancement: none. Also see GIA reports nos. 15784768 and 15784474 stating that the two diamonds are G color, VS2 clarity and H color, VS1 clarity, respectively. Shank interior signed Gaston.
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 AGL report no. CS 38984 stating that the emerald is of Classic Colombian origin; clarity enhancement: none. 

Also accompanied by 2 GIA reports nos. 15784768 and 15784474 stating that the 1.61 carat diamonds are G color, VS2 clarity and H color, VS1 clarity respectively.