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
http://grading.pricescope.com
In addition to above, that URL leads to a whole bunch of good
David Barzilay, Lord of the Rings
607 S Hill St Ste 850
Los Angeles, CA 90014-1718
213-488-9157