• YourGemologist

    by Published on 07-15-2015 02:20 PM     Number of Views: 3446 
    Over the past few weeks I have watched with interest the unfolding episodes of caustic attacks on the Board of Directors of the Gemmological Association of Great Britain by a group who seems intent on creating havoc in the industry. I must admit that I was first drawn in to their antics regarding a petition that calls for a special meeting of the Gem-A to further their demands on the Gem-A Board. I logged in to their website petition site, paid a US$2.00 "donation" and digitally signed their petition. I want to formally go on record that I formally retract my signature from this petition.
    by Published on 06-24-2015 01:25 PM  Number of Views: 7735 
    1. Categories:
    2. ISG Gem Reports
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    Last month I received an email from our very dear friend, Walter Asikaro of Consolidated Gem LTD. in Abuja, Nigeria, telling me about a collection of natural sapphires from the Manbilah Plateau in Taraba State of Nigeria that he was donating to the ISG for student study and reference. This alone was exciting enough news. But when Walter wrote that this parcel included some of the "best natural cornflower I have ever seen".....I knew something special was on the way. Walter has been a true friend of the ISG for years, providing us with prime source specimens of Nigerian tourmalines from the four main mines there, and donating all of these to the ISG for study and reference. So when Walter says he is sending something special, I know that something truly special is on the way. I was absolutely amazed when I opened the parcel. Rather than spend a lot of time telling you about it, let's just look at some photographs of this amazing collection that includes a variety of other gemstones from Nigeria, and are available from Consolidated Gem LTD in case anyone needs a trusted source. More on that in just a bit. For now, I want to show you some astounding Natural Cornflower Sapphires from Nigeria in the two images below, then look at some of the other wonderful Nigerian gemstones that are available on the market from our good friends at Consolidated Gem LTD.
    by Published on 06-19-2015 12:37 PM  Number of Views: 3548 
    1. Categories:
    2. ISG Gem Reports
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    According to the latest edition of the Diamond Intelligence Briefing by Chaim Even-Zohar, the International Gemological Institute in Antwerp has resolved the issue of the mysterious color treatment that has plagued the world diamond industry over the past few weeks. At issue was the claim that some type of temporary treatment was being done to diamonds that caused them to have a higher than actual color grade when graded by the GIA Israel lab. The GIA was unable to verify the treatment or the cause behind it, only that the diamonds were being graded up to three grades higher upon initial inspection, but later the same diamonds were color grading at the much lower grade. According to the DIB report, the IGI confirms it is a coating that is extremely thin, that causes the diamond to have an "apparent color grade" that is higher than the diamond crystal actually offers. This type of coating is not new technology, as it has been in the industry for decades. It is basically the same type of coating claimed by Serenity® to coat their cubic zirconia with a "carbon-like" coating that is claimed to impart special optical properties to their cubic zirconia. I have been told by those connected to Serenity and other companies producing coated cubic zirconia, that the process is basically the same as used to coat DVD disks and grocery store check out scan beds.
    by Published on 06-10-2015 12:47 PM     Number of Views: 2907 
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    Having worked with the Special Investigations Unit of USAA Insurance for a number of years, I had the opportunity to receive training from former U.S. Secret Service and FBI agents involving investigative techniques and protocols. This training, along with my Insurance Property and Casualty Adjuster’s license (TDI #1300433), has provided me with an opportunity to work in high value insurance claims investigations regarding jewelry and gemstones in both the United States and Europe. Over the past few weeks I have received numerous requests to comment on the situation of the GIA’s mysterious disappearing diamond color treatment, as reported by numerous industry media and publications. Based on the research done for our ISG Created and Treated Gemstones course, and a review of the various documents and comments made by the parties involved, I have come to one conclusion: There are some very dubious issues raised by the GIA story of this mysterious temporary diamond treatment.
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