Platinum, Sapphire and Diamond Ring

The cushion-shaped sapphire weighing 19.55 carats, flanked by baguette diamonds, size 5¼.

Accompanied by Gubelin letter and report 1007097 stating that the sapphire is of Burmese origin, no indications of heating, this color variety of sapphire may also be called ‘royal blue’ by members of the trade; and AGL letter and report CS80701 stating that the sapphire is of Burmese origin, heat enhancement: none. The sapphire is more richly saturated and slightly darker in tone than in the catalogue, a very clean stone overall, but there is a small reflective inclusion found under the table, visible only on close inspection, additional inclusions clustered toward one end of the stone, excellent polish and luster. The flanking diamonds are approximately E-G color, VS clarity. The mounting is in very good condition, sizing inset to stabilize the ring on the finger.
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 Gübelin letter and report no. 1007097 stating that the sapphire is of Burmese origin, no indications of heating, this colour variety of sapphire may also be called 'royal blue' by members of the trade; and AGL letter and report no. CS 80701 stating that the sapphire is of Burmese origin, heat enhancement: none.

"It is the most cheerful of all gemstones.  It frees the spirit and creates well being." - Richard Burton

Over the ages, sapphires have come to symbolize harmony, loyalty, trust, faithfulness and love.  In ancient times it was believed that the Earth was set in a sapphire whose blue color was reflected in the sky.  The various shades of blue with which sapphires are imbued were said to reflect the changing mood of the sky.  Royal Blue, the color grading which the Gübelin Gemological Laboratory reserves for the finest Burmese sapphires and which has been awarded this magnificent Burmese stone, is one of the most desirable hues.  The color has been described by Dr. Eduard Gübelin as being "imbued with a silken velvety sheen, leading the glance into its hidden depths, rendered as unfathomable as mountain lakes by a tiny trace of cobalt blue."  In gemological terms, the color of a sapphire is a result of traces of iron and titanium in the original corundum composition.  The source of the finest quality of Burmese sapphires, which this stone is most definitely, is the remote valley of Mogok.