18 Karat Gold, Platinum, Opal, Sapphire, and Garnet Brooch, Louis Comfort Tiffany, Tiffany & Co., Circa 1920

Probably designed by Louis Comfort Tiffany, set in the center with a round black opal measuring approximately 18.5 mm., set within an openwork plaque studded with round demantoid and spessartite garnets, accented by round sapphires, further decorated on the reverse with gold scrollwork, signed Tiffany & Co.  With signed box.

In very good condition with wonderful color contrast. Color is well represented by the printed catalogue illustration. The semi-translucent opal with blue-green play of color with faint flashes of red-orange. Moderate crazing to the surface seen on close inspection. The medium blue color of the sapphires typical of examples mined from Montana. The demantoids of varying shades of yellow-green; some with abrasions and minor chips. The spessartites of light orange color and lightly included. Signature on inside reverse frame. The lining of the box signed "Tiffany & Co., New York, Paris - London"
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.

For another example with black opal, demantoid garnets and sapphires see Louis Comfort Tiffany at Tiffany & Co., John Loring, p. 70.