Diamond ring, Jean Schlumberger, 1960s

Designed as five buds pavé-set with brilliant- and single-cut diamonds, the central flower of open work design set with a step-cut diamond weighing 4.21 carats, size 49, signed Schlumberger and Monture S, French assay and partial maker's marks.

Accompanied by GIA report no. 1172041584, stating that the diamond weighing 4.21 carats, measuring 9.22 x 8.51 x 5.91mm, is G Colour, VS2 Clarity. Inside of band signed both Schlumberger and Monture S. Partial French maker's mark. French assay marks for platinum and gold. Other diamonds estimated to weigh a total of 2.00 - 3.00 carats, G - I, VS - SI clarity, as gauged and graded in the mount. Signs of normal wear to the metal consistent with use. In good condition. Gross weight approximately 21 grams.
"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 and to the Notice regarding import of Burmese jadeite and rubies into the US.
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