HIDDEN MENU ITEMS
Twitter Feed

Entries in Clarity (4)

Tuesday
Jun182013

"Grading the Graders", well worth the read.... - a report by the Rapnet Team.

RAPAPORT... No two diamonds are alike and it seems neither are their grading certificates. A survey by RapNet – the Rapaport Diamond Trading Network, found significant differences between laboratories grading the same diamond. 

While there is a common language used in the grading of diamonds, there are clear inconsistencies in the use of that language, concluded Saville Stern, chief operating officer of RapNet. Stern oversaw the study and presented its findings at the fourth annual Rapaport Diamond Certification Conference in Las Vegas on June 2.  

Click to read more ...

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.

Click to read more ...

Sunday
Nov062011

In Memoriam 

‘Commiseration’ is what someone offered me at the news that the Oppenheimers were leaving De Beers.

The idea that I might miss such an easy target to have the odd pop shot at when bored had not been my first reaction, and I pointed out that I enjoyed reading obituaries and looked forward to writing this one.

Also, I must say I can hardly feel sorry for someone who has managed to sell their stake in a company for $5.1 billion in cash, and it actually makes me wonder who felt under more pressure.

De Beers was, I recall, valued at $19 billion when it was privatised in 2001, so

Click to read more ...

Wednesday
Aug172011

Clarity of Diamonds Explained

The clarity of a diamond is evaluated based on whether certain characteristics within and on the diamond are present and identifiable. At times, flaws in clarity are a result of the extreme duress that diamonds go through during the cutting process. However, most characteristics of clarity are intrinsic qualities of the rough diamond and have been around since the birthing stages of the diamond's underground creation.

Click to read more ...