RARE AND IMPORTANT EMERALD AND DIAMOND RING

Centring on a cushion-shaped emerald weighing 15.22 carats, surrounded by brilliant-cut and pear-shaped diamonds together weighing approximately 4.70 carats, mounted in 18 karat yellow and white gold. Ring size: 5½

Colour and Clarity: According to the SSEF, Gübelin. AGL and GRS reports, the emeralds are of Colombian origin, with no clarity enhancement. Please refer to the reports for details. In our opinion, the emeralds are of vibrant intense emerald green colour, lively stone. Upon 10x loup, the emerald has minute inclusions which is not noticable to naked eyes, and a tiny nick on the girdle. According to four GIA dossier reports, the diamonds are F colour, VS clarity.Condition: In mint 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.
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 Gübelin, SSEF, AGL and GRS reports numbered 12116074, 58723, CS 80991 and GRS2011-022202 respectively, stating that the 15.22 carat emerald is natural, of Colombian origin, with no indications of clarity enhancement. Also accompanied by four GIA reports, stating that four diamonds each weighing 0.50 carat are of F colour, VS1 clarity.

COLOMBIAN CHARM
Emeralds were unearthed as early as 2000 BC from the Cleopatra’s mines in Egypt, but it was not until the 16th century that these beguiling green gems were introduced to Europe, when the conquering Spaniards took an immense quantity of emerald from Peru and Colombia back to their homeland. These treasures were quick to gain popularity for their exceptional qualities, especially the rich saturated green colour that was never seen before by Europeans. Today, Colombia is recognized as the source for the world’s most sought-after emeralds.

Colombian emeralds exhibit a soft, beautiful bluish green colour without traces of greyishness. Yet their colour-causing elements, chromium and vanadium, induce stress during crystallization, causing inclusions so common and unavoidable that are forgiven by gem connoisseurs. Therefore, emeralds treated with oil to mask such imperfections are also widely accepted in the trade nowadays.

This 15.22-carat emerald presents a striking balance of natural Colombian produce between refined green colour and exceptional clarity, even more notable is the absence of any oil enhancement in this natural beauty of astounding size. A Colombian emerald combining these significant attributes is of no doubt the utmost dream of every discerning collector.