A Russian gold, diamond and transparent enamel brooch, Karl Bok, St. Petersburg, 1901-1908

of circular form, enameled translucent orange over a sunburst guilloché ground and set with a single flower and stem in diamonds, the border similarly encircled with rose-cut diamonds, struck with maker's mark and 56 standard, contained in fitted leather case 

overall good condition 1 old mine-cut diamond weighing approximately .95 carat, approximately I-J color, I clarity. Numerous old European and old mine-cut diamonds weighing approximately 1.70 carats, approximately G-I color, SI-I 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.
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.

The firm of Karl Bok received the designation of Supplier to the Court in 1901. Primarily jewelers, the firm had shops in Moscow and St. Petersburg. Karl Bok's son Alexander, also a jeweler, worked alongside Agathon Fabergé in cataloguing the Diamond Fund in 1922.