An Exceptional Paraiba Tourmaline and Diamond Pendant-Necklace | 帕拉伊巴碧璽配鑽石吊墜項鏈
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Captivated by Color: Important Jewels and Gemstones from an American Collector
An Exceptional Tourmaline and Diamond Pendant-Necklace
Suspending a modified triangular brilliant-cut Paraiba tourmaline weighing 10.31 carats, capped and accented by round diamonds, length adjustable from 14 to 18 inches.
In very good condition. Clasp stamped PT950 for platinum, pendant tests as platinum. The Paraiba tourmaline is a vibrant medium, slightly greenish blue color, with strong saturation, loupe-clean, with moderate pleochroism. The diamonds, estimated to weigh a total of approximately 0.65 carat, are approximately F-G color, VS clarity. Accompanied by AGL report no. 1123064 dated April 27, 2022 stating that the Paraiba tourmaline is of Classic Brazilian origin, with low temperature heating. Accompanied by AGTA report no. 96013007 dated June 18, 2004 stating that the tourmaline is of Brazilian origin, with indications of heating.
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. 1123064 dated April 27, 2022 stating that the Paraiba tourmaline is of Classic Brazilian origin, with low temperature heating.
Accompanied by Gübelin report no. 22052131 dated June 2, 2022 stating that the Paraiba tourmaline is of Brazilian origin, with undetermined treatment, together with an Information Sheet on Paraiba tourmalines and an Appendix attesting to this stone’s ‘exceptional rarities.’
Accompanied by AGTA report no. 96013007 dated June 18, 2004 stating that the tourmaline is of Brazilian origin, with indications of heating.
Tourmaline, the most diverse of all gems, has an astonishing range of colors, but none more celebrated than the “electric” Paraiba variety. This type of elbaite is colored by a complex chemical interplay notably involving traces of copper. In rare cases, typically through gentle heating, vivid “neon” green-blues and blues are produced. Many who experience these exotic hues for the first time find it difficult to believe such shocking, vibrant colors are possible in a natural stone.
Discovered in the late 1980s in São José da Batalha in the Brazilian state of Paraíba, this novelty gem was introduced at the 1990 Tucson gem and mineral show. The initial surprise over the unprecedented colors quickly turned into soaring demand and historic values for tourmaline over a short four-day period, cementing a trend that has kept a furious pace ever since. Subsequent exploration yielded small additional Brazilian deposits in the Rio Grande do Norte as well as two African finds, in Nigeria (2001) and later in Mozambique (2005). These mines produced prized Paraiba examples, but it is undeniable that the scarce few exceptional gems mined from the now exhausted original Brazilian sources remain most coveted by connoisseurs.
The present lot is an example of exceptional size and color sourced from the Brazilian finds. Weighing over 10 carats, its vivid saturation and open tone combines a pleasing hint of green to the dominant blue hue. Unlike the vast majority of Brazilian Paraiba which have transparency issues, this stone adds to its distinction with an extraordinary clarity. It is a true gem worthy of the finest collections.