Diamond ring and matching band ring

The solitaire ring centering an oval diamond weighing 2.00 carats, flanked by 24 square modified brilliant-cut diamonds weighing a total of approximately 1.10 carats, the band ring set with a row of 12 square modified brilliant-cut diamonds weighing approximately .75 carat, both mounted in 18 karat gold, size 6, stamped 'Quad'. 

The girdle inscription is for Lazare Kaplan. The 'Quad' stamped on the inside of both shanks is likely the registered name for the cut of the square diamonds. See GIA report stating the center diamond is D-VVS2. The square diamonds are approximately E-F color and VS clarity. 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. 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. 16240226 stating that the diamond is D color, VVS2 clarity, laser inscription: LK 139137 U.S.A.