Fancy Deep Brownish Greenish Yellow Diamond, Conch Pearl, Gem Set and Diamond Brooch, Michael Youssoufian

Of floral design, centring upon a cut-cornered square modified brilliant-cut fancy deep brownish greenish yellow diamond weighing 0.93 carat, surrounded by stamens set with diamonds of yellow tint, to the conch pearl petals framed by coloured sapphires, rubies and diamonds, completed by the diamond-set stem and pear-shaped emerald leaves, mounted in 18 karat white, yellow and pink gold, signed MY, with Michael Youssoufian maker's mark, pouch stamped M.Y.

Potential bidders who intend to export this lot are advised that certain permits may be required for export. If you are interested in this lot, please contact the Jewellery Department before bidding. Accompanied by GIA report numbered 11055835, dated 2 March 2000, stating that the 0.93 carat diamond is natural, Fancy Deep Brownish Greenish Yellow Colour; GIA further commented that 'the colour of this stone changes temporarily when gently heated, or when left in darkness for a period of time and is known in the trade as "CHAMELEON". Please refer to the report for further details. Please note that the report is more than (10) years old and might require an update. Signed MY and with Michael Youssoufian maker's mark. Stamped 750 for 18 karat white, yellow and pink gold. Conch pearls of elongated baroque shape, measuring approximately 33.40 x 14.20 x 9.20 to 19.80 x 10.20 x 5.10mm; one of white colour with light yellow highlight; and five of white with pink highlights; majority with noticeable flame structure observed under 10x magnification, some scratches and natural blemishes. The Fancy Deep Brownish Greenish Yellow diamond is SI clarity. Smaller diamonds estimated to weigh approximately 4.00 carats; some with yellow and brownish yellow tint, of vivid to light saturation, VS to SI clarity; some are on average G to I colour, SI clarity; rose-cut diamond with light brown tint, I clarity; as gauged ans graded in the mounting. Coloured diamonds have not been tested for natural colour origin. Coloured sapphires and rubies estimated to weigh approximately 5.00 carats; sapphires are faint purple and purplish pink to purple-pink colour, of medium to strong saturation, and rubies red to purplish red of medium strong saturation; with minor typical inclusions, some nicks and abrasions, and a few with minor chips. Emeralds estimated to weigh approximately 1.70 carats, green of medium light saturation, with typical inclusions and a few are surface reaching, some nicks and minor abrasions. Signs of minor wear to the metal, the back of the setting with some light discolouration, overall in very 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.Certificates of Authenticity: Various manufacturers may not issue certificates of authenticity upon request. Sotheby's is not under an obligation to furnish the purchaser with a certificate of authenticity from the manufacturer at any time. Unless the requirements for a rescission of the sale under the Terms of Guarantee are satisfied, the failure of a manufacturer to issue a certificate will not constitute grounds to rescind the sale. Gemological Certificates and Reports: References in the catalogue descriptions to certificates or reports issued by gemological laboratories are provided only for the information of bidders, and Sotheby's does not guarantee and accepts no responsibility for the accuracy, terms or information contained in such certificates or reports. Please also note that laboratories may differ in their assessment of a gemstone (including its origin and presence, type and extent of treatments) and their certificates or reports may contain different results.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 numbered 11055835, dated 2 March 2000, stating that the 0.93 carat diamond is natural, Fancy Deep Brownish Greenish Yellow Colour; GIA further commented that 'the colour of this stone changes temporarily when gently heated, or when left in darkness for a period of time and is known in the trade as "CHAMELEON"'. Please note that the report is more than (10) years old and might require an update.

Potential bidders who intend to export this lot are advised that certain permits may be required for export. If you are interested in this lot, please contact the Jewellery Department before bidding.