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15
False positive means that a natural diamond gets a result of a lab grown diamond. It happens in about 2.5% of
natural diamond. In order to further reduce this rate we
MUST
check the LUV (LONG UV ) result.
If a diamond show
BLUE
fluorescence under the LUV illumination- it is 100% natural diamond.
Here we have a result of a lab grown diamonds
HOWEVER: when we go the LUV (LONG UV) result –
both diamond show blue fluorescence.
That means that both are NATURAL diamonds!!!
Pay Attention:
Some natural diamonds that give a false positive result will NOT shine under the Long UV illumination.
RESULT PICTURE
LUV PICTURE
FALSE POSITIVE
FALSE POSITIVE
The
ASSURE Instrument Testing Program
is an ongoing initiative of the Natural Diamond Council.
They used an independent 3rd party, Underwriters Laboratories (UL), to impartially test and verify
the effectiveness of all the CVD/HPHT detection devices submitted for a comprehensive review.
Underwriters Laboratories tested 31 different detectors. Of these, 15 were the preferable types
that could simultaneously check multiple diamonds and jewelry. Of the 15 tested, ONLY TWO were
determined to be capable of detecting 100% of all lab grown diamonds.
The two they certified as having this perfect detection rate included:
Sherlock Holmes 2.0 by
YEHUDA.
SYNTHdetect by DeBeers ($18,000-$25,000)
Our new generation detectors have not yet been evaluated by Underwriters Laboratories in the
ASSURE program. However, it is important to note that these new generation
YEHUDA
detectors use
the
IDENTICAL DETECTION WAVELENGTHS
, and based upon our rigorous testing, we are confident
that their accuracy is identical to the Sherlock Holmes 2.0.
ASSURE TESTING
ASSURE TESTING
