Diamond butterfly brooch, early 20th century

Designed as a butterfly, the open work wings set throughout with brilliant-, single- and circular-cut diamonds, and highlighted with baguette and square diamonds.

Incised number 46094. Diamonds are bright and lively, estimated clarity SI on average, however there are some I clarity. Estimated total diamond weight 4.30-5.30 carats. There are small patches of dark discoloration to the front, larger areas of dark discoloration to the reverse, also some yellow discoloration. Metal show signs of normal wear, scratching and small dents. Pin fitting closes securely, tight tension. Measuring approximately 52 x 38mm. Overall condition good.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. 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. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."