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4 posts from June 2007

Teenage Girls Finds 2.93-carat Diamond

Craternicole_ruhter When walking in a field of diamonds, it pays to keep your eyes open and alert.  That was definitely the case for Nicole Ruhter of Butler, Missouri who recently discovered a 2.93-carat light-brown colored diamond at Crater of Diamonds State Park.  Walking the path that hundreds had walked, she noticed a little shine and a “broken pyramid” shape sticking out of the ground.

Nicole, her parents, grandparents, brother and sister has spent the day digging but Nicole’s sharp eyes made her the lucky one.  As is the custom for larger diamonds found at Crater of Diamonds, the finder names the diamond.  In Nicole’s case, she decided on “Pathfinder Diamond” because of finding it on the path.  She plans to keep the diamond for a while and then will probably get it appraised and offer it for sale.

Crater293_diamond The 2.93-carat diamond was the largest of the 332 diamonds found at Crater of Diamonds so far this year.  On average, park visitors find about two diamonds per day at Crater of Diamonds State Park, which is the world’s only diamond production area where the public can keep the diamonds they find.

Click here for other Crater of Diamonds blog articles

EGL Announces Light Performance Measurement

EglusalogoThe EGL USA laboratory recently announced that beginning in July, they will offer a new 360º Diamond Report that presents the traditional industry specifications and measurements for a diamond but features a new measure of light performance.

In addition to the new light performance measure, EGL USA’s 360º Diamond Report assigns a new overall grade for visual appeal.  This new grade, called the Diamond’s Natural Attraction (DNA), is a composite of twelve characteristics; seven for cut and proportion, two for polish and symmetry, and three related to the new light performance.

The 360º Diamond Report service utilizes direct light-performance developed specifically for EGL USA by ImaGem Inc., a company specializing in technology for grading and identifying gems.  ImaGem’s systems combine advanced optics, imaging technology and proprietary software to automate and integrate diamond grading.

I will be provide addition feedback on EGL USA’s 360º Diamond Report as the service is implemented and we have a chance to evaluate this new entry into the cut grade competition between the diamond grading laboratories.

GIA Expands Diamond Dossier Services

GialogoThis month the Gemological Institute of America (GIA) expanded services associated with its Diamond Dossier diamond-grading report.  The Diamond Dossier service now provides diamond grading for diamonds ranging from 0.15 to 1.99 carats.  Previously, the Diamond Dossier was limited to diamonds up to 0.99 carat so this expansion will mean a larger number of diamonds in the 1.00 to 1.99 carat weight range will now have the GIA number laser inscribed, which is a feature of every diamond with a GIA Diamond Dossier.

While the laser inscription is a valuable feature for consumers, diamond shoppers need to be aware that there is no plot map of diamond characteristics with any of the Diamond Dossier reports.  Diamond shoppers will have to rely on retailers and appraisers to examine the diamond under a microscope to assess the inclusions in terms of durability and visibility. 

For example, feathers that cut across the pointed corners of princess-cut diamonds can be a hazard during the setting process with the result being a broken corner.  Without the plot map showing the type and location of inclusions, the diamond shopper must rely on someone with a microscope and diamond experience to identify problems before they happen and hopefully before the purchase.

The GIA, like other laboratories, grades clarity based on viewing the diamond from the top.  Sometimes inclusions are difficult to see with magnification from the top (higher clarity grades) but can be visible to the unaided eye when viewing the diamond from the side.

AGS Announces New Diamond Quality Analysis

Agslogowhite With more and more consumers wanting independent grading reports for diamonds under a carat weight, the American Gemological Society (AGS) Laboratories announced a new diamond-grading document this month.

The Diamond Quality Analysis (DQA) report is the trademarked name for the smaller format document that will be available for diamonds in the 0.18 to 0.99 carat weight range.  The Diamond Quality Analysis will contain information on the diamonds measurements, weight, cut parameters, color, and clarity.

Agsdqa The DQA is similar to the GIA’s Diamond Dossier Report in that there is no plot map of diamond characteristics but every diamond will be laser inscribed.  The lower price and quicker turnaround for this smaller format report make it popular choice for cutters and wholesalers who need to get grading reports for their thousands of lower carat weight diamonds.  The laser inscription is becoming a valuable feature in the consumer market where there is a concern over jewelers switching diamonds during the setting, repair or cleaning processes.

The AGS is the leader in the industry for providing cut grades for fancy shaped diamonds.  In addition to the round brilliant shape, the AGS has a cut grade system that assigns cut grades for princess-cut and emerald-cut diamonds.