現場拍賣 1371Jewels : The Geneva Sale
Christie’s roundel
拍品 213

AN IMPORTANT DIAMOND RING, MOUNTED BY CARTIER

已結束2009年11月18日

成交價

CHF 1,555,000

是否考慮出售類似藏品？

透過我們的專家免費評估服務，了解其價值。

更多資訊

如何委託拍賣

AN IMPORTANT DIAMOND RING, MOUNTED BY CARTIER
Set with a pear-shaped light blue diamond weighing 24.92 carats to the shield-shaped diamond shoulders, mounted in 18k gold, ring size 6½
Mount by Cartier
Accompanied by report no. 17458553 dated 11 July 2008 from the GIA Gemological Institute of America stating that the diamond is Light Blue colour, VVS2 clarity

With a working diagram stating that the diamond is Potentially Internally Flawless

With an appendix stating that the diamond is a Type II b diamond

專家說明

The Gemological Institute of America distinguishes diamonds with the palest of blue tints from colourless diamonds, and classifies these rare stones formerly graded 'D' as Type II b. These Type II b diamonds are semi-conductors of electricity due to minute quantities of boron in the crystal lattice. They are extremely rare and it is reported that less than one in 1000 fine quality diamonds can be classified as Type II b. All naturally occuring blue diamonds, ranging from palest to deepest blue, fall into this category.