Wednesday 30 November 2016

Asian Collectors Showed Great Confidence for Colored Diamonds

Asian Collectors Showed Great Confidence for Colored Diamonds

[Langerman Diamonds] The star of the Christie’s Hong Kong Magnificent Jewels auction of novembre, 29, was a marquise-cut fancy vivid blue diamond, weighing approximately 4.29 carats, flanked by triangular-shaped diamond  mounted in platinum ring.

The marquise cut, with 56 facets, is a slender, striking cut ideal for rings.

Natural Blue Diamond Type IIb

This Fancy vivid blue diamond certified by the GIA as a Type IIb diamond with an internally flawless (IF) clarity fetched $11.8 million  (HKD 91,260,000) at the sale ($2.7 million per carat). 

Type IIb diamonds are very rare. Those type IIb diamonds contain a small amount of boron The higher the concentration of boron, the more intense the blue (or gray) coloration. Those diamonds have also the physical property to conduct electricity, they are semi-conductors. This has been said, not all natural color blue diamonds are colored by boron, and thus not all will conduct electricity. Historically some blue diamonds were founded in the old mines of India. Nowadays the most significant mine producing very few blue diamonds is the Cullinan Mine in South Africa.

“Once again at Christie’s Hong Kong, Asian collectors and members of the trade showed great confidence for rare and important gemstones” said Vickie Sek, deputy chairman for Asia and director of Christie’s Asia jewelry department. A lot of buyers showed motivation to buy investment worthy fancy color diamonds.


By YDCDL - Langerman Diamonds
Source & images courtesy: Christies's.