Emerald and Diamond Ring, Oscar Heyman & Brothers

Set with a square emerald-cut emerald weighing 45.94 carats, accented by two modified triangular brilliant-cut diamonds weighing 1.54 and 1.52 carats, further highlighted by baguette diamonds, size 6½, with maker's mark for Oscar Heyman & Brothers, numbered 302847.

 

In very good condition, with little sign of wear to the mounting. Inscribed 18% irid plat for iridium-platinum alloy. The Oscar Heyman Certificate of Authenticity stating that the ring includes 2 trilliant diamonds weighing 3.06 carats and 56 baguette diamonds weighing 4.21 carats. The triangular diamonds with GIA reports, listed below, the baguette diamonds of similar color and clarity. The emerald is medium slightly bluish green, moderately included with some surface reaching inclusions visible under 10x magnification. Accompanied by 3 gemological reports: AGL report no. 1090729 stating that the emerald is of Colombian origin, clarity enhancement: minor, type: modern; Gübelin report no. 17042019 stating that the emerald is of Colombian origin, with minor clarity enhancement; GRS report no. 2017-058746 stating that the emerald is of Colombian origin, with minor clarity enhancement. The modified triangular brilliant diamonds accompanied by GIA report no. 7183281100 stating that the diamond weighing 1.54 carats is H color, VS2 clarity; and GIA report no. 3185281077 stating that the diamond weighing 1.52 carats is G color, VS2 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. 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 AGL report no. 1090729 stating that the emerald is of Colombian origin, clarity enhancement: minor, type: modern.Accompanied by Gübelin report no. 17042019 stating that the emerald is of Colombian origin, with minor clarity enhancement.

Accompanied by GRS report no. 2017-058746 stating that the emerald is of Colombian origin, with minor clarity enhancement.

Accompanied by GIA report no. 7183281100 stating that the diamond weighing 1.54 carats is H color, VS2 clarity.

Accompanied by GIA report no. 3185281077 stating that the diamond weighing 1.52 carats is G color, VS2 clarity.

Accompanied by a Certificate of Authenticity from Oscar Heyman & Brothers.