[Jewelry making - Article 00950] - Re: [Orchid] Glass-filled rubies

[Jack Ogden]

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    Thanks Bill and David for your kind comments about the Gem-A List
    with regard to its circulation of information about Glass Filled
    Rubies. 

    Glass filled rubies are not the only new headache in our industry.
    On my desk at the minute are samples of the green glass beads and
    glass 'gems' that have supposedly been imported into the USA set in
    'tons' of costume jewellery - the pretty green is due to use of
    depleted uranium. (Origin of the glass supposedly Czech Republic,
    maybe a bit further East). These things make our lab Geiger counter
    sound like an agitated rattlesnake. Then there is the nice little
    'tanzanite' week or so ago that turned out to be synthetic
    forsterite... 

    Gem-A is the Gemmological Association, based in Hatton Garden (the
    jewellery district) in London and it also runs the London Gem Testing
    Laboratory. The Gem-A list is, at present anyway, limited to members
    of that Association (International, with about half based in UK) and
    is one of the benefits of Membership. This which is why we can't
    offer it freely to all interested parties. That said, I would love to
    find areas where we can work with Orchid. 

    You might want to have a look at the Gem-A site -
    http://www.gem-a.info - to get an idea of what we do. Or what we do
    so far... My own background is as much the history of jewellery
    materials and technology as gemmology. One of our publication Gems
    and Jewellery (in association with the Society of Jewellery
    Historians) is expanding its cover of historical jewellery technology
    stuff, and our lab is widening its remit to also look the metals,
    enamels etc (analysis, technology, toolmarks, authenticity).  So if
    you join Gem-A you will not only be able to be on the Gem-A List and
    receive our publications, you will also be actively supporting
    research into the history of jewellery technology. Sorry for the
    sales pitch :) 

    Gem-A USA has a booth at Tucson (AGTA -  Booth 31) so I'll be there
    (and at the Orchid Dinner) and delighted to talk to any of you. If
    you are interested in the history of jewellery technology and in
    particular authenticating 18th - 19th century jewellery on the basis
    of technology, I am giving a seminar on the subject at the National
    Association of Jewelry Appraisers education conference on Thursday
    3rd at the Clarion Hotel Tucson Airport - have a look at
    http://www.najaappraisers.com/html/conferences.html 

Best wishes to all
Jack Ogden
Dr Jack Ogden
Chief Executive Gem-A
T: +44 20 7404 3334

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