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Friday
Oct122012

Scientists find diamond planet

This artist's rendition released by Yale University shows the interior of 55 Cancri e, located 40 light years from Earth revolving around a star in the Cancer constellation. Source: Supplied

TWINKLING stars are not the only diamonds in the sky. Scientists have reported the existence of a "diamond planet" twice the size of Earth, and eight times its mass, zooming around a nearby star.

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Thursday
Aug232012

CLARITY TREATMENTS IN DIAMONDS: LASER DRILLING AND INTERNAL LASER DRILLING

 

16.08.12

By Yehuda Yakar, GG GIA, Chief Gemologist at GCI

 

 
 

 

All natural diamonds have faults that could negatively influence their gemological rating and financial value. Diamond cutters can remove some of the clarity faults, but some flaws demand a different treatment, one which has techniques developed since the 1970s to nowadays. Every treatment that a diamond undergoes must be disclosed at every stage. Anyone who violates this obligation is breaking rules which apply to members of every diamond bourse and association in the world. In some cases, it is even illegal not to disclose.

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Thursday
Aug232012

Japan Pearls: Gems of lustrous classic beauty

Talking about Japan Pearls, many people will think of akoya pearls, which are produced in the cool waters of Japan. Japanese akoya pearls are known for their roundness and high lustre, as their nacre crystals are fine and compact, reflecting maximum light. A symbol of classic beauty, a necklace with Japanese akoya pearls in pinkish white colour is regarded as the best match for wedding gown.

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Thursday
Jul262012

Rio releases sustainable jewellery range

 

Rio Tinto’s debut sustainable jewellery collection entitled ‘Nature’s Beauty’ is launched. The collection was showcased first at the JCK Luxury show in Las Vegas.

 

This collection is a pilot project by the miner, and is crafted with gold from Rio Tinto’s Kennecott Utah Copper mine in the US, and white and champagne diamonds from Rio Tinto’s Argyle Diamond Mine in Australia. It offers earrings, rings, necklace and cuffs.

Rio Tinto has been at the vanguard of reform in the jewellery industry and results from consumer focus groups and quantitative research have revealed just how important the issue of sustainability is, in the eyes of jewellery consumers. Rio Tinto Diamonds chief commercial officer, Jean-Marc Lieberherr said, “Today’s consumer islooking for assurance that the jewellery they buy has been produced to the highest ethical, social and environmental standards.”

Rio Tinto is the only miner certified by The Responsible Jewellery Council. Whilst remote from each other socially and geographically, Rio Tinto’s mines are linked by their commitment to sustainable mining practices and a desire to make a positive difference to the communities in which they reside.

The miner plans to introduce this collection as a trial run in the U.S. Rio Tinto launches sustainable jewellery collection.

 

Tuesday
Jul102012

The Hope Diamond - a good read courtesy of Smithsonian

The Hope Diamond

WEIGHT: 45.52 carats
CLARITY: VS1. Whitish graining is present.
COLOR: Natural fancy deep grayish-blue
CUT: Cushion antique brilliant with a faceted girdle and extra facets on the pavilion.
DIMENSIONS:
   Length: 25.60 mm
   Width: 21.78 mm
   Depth: 12.00 mm

Today, like every day, thousands to tens of thousands of visitors will press into the Harry Winston Gallery of the Smithsonian’s Geology, Gems and Minerals exhibition to experience the beauty, magic and mystery of the Hope Diamond, making it, perhaps, the most visited museum object in the world.

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