拍品 209
209
A RARE COLOURED DIAMOND SINGLE-STONE RING
No VAT will be charged on the hammer price, but VA… 显示更多 PROPERTY FROM AN INDIAN PRINCELY FAMILY
A RARE COLOURED DIAMOND SINGLE-STONE RING

细节
A RARE COLOURED DIAMOND SINGLE-STONE RING
The rectangular-cut fancy gray-yellowish green 'chameleon' diamond weighing 11.22 carats to the baguette-cut diamond shoulders and plain hoop
Accompanied by report No. 15310573 dated 9 November 2006 from the Gemological Institute of America stating that the diamond is fancy gray-yellowish green colour, VS1 clarity
注意事项
No VAT will be charged on the hammer price, but VAT at 15% will be added to the buyer's premium which is invoiced on a VAT inclusive basis.

拍品专文

This 'chameleon' diamond just like the reptile of the same name has the ability to change colour. Under normal conditions the diamond has an olive-green colour which transforms to a yellow colour when heated to a temperature of 200-300° Centigrade or when left in the dark for several days. This interesting phenomena is caused by irregularities in the diamond's atomic structure