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Pricescope's diamond grading

Some of you might have heart that a recent survey in the US concluded
that diamond grading was highly subjective and the three main labs
varied in their estimates of colour and clarity. The survey was
conducted by Pricescope and looked at diamond grading by the GIA, AGS
and EGL USA lab grading. The survey can be found in full at

In addition to above, that URL leads to a whole bunch of good

David Barzilay, Lord of the Rings
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Los Angeles, CA 90014-1718