[Jewelry making - Article 00190] - Re: [Orchid] Gemstone Treatments

[Michael . Hing]

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>          It took three tries at the labs, but he finally got a Kashmir
>     non-treated certification. This is only one instance in many that
>     have occurred in my 20 + years working as a cutter for gemstone
>     dealers and jewelers. 

    Yes, it's surprising how little-known this process is.  This kind of
    activity is extremely common in the diamond field.  The difference
    in price between a D-flawless stone and an E-flawless stone (for
    example) is so big that it is normal for a diamond dealer to
    re-submit the same stone to a gem lab several times, in the hope of
    getting the better certificate.  The expenses of repeated
    re-certification are outweighed by the big increase in price. 

    I seem to recall reading somewhere that if you send the same stone
    repeatedly to a gem lab, it will come back with a different clarity
    or colour grade about one in every six times. 

?8-)
-Michael.


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