1 reply to this topic

[radiobuck]

I was wondering why they would have this on the GIA report, under the comments.

Internal graining is not shown

Surface graining is not shown

[url="http://www.bluenile.com/diamonds_details.asp?__fun_frm=i&pid=LD01084164&filter_id=1"][url]http://www.bluenile.com/diamonds_details.a...amp;filter_id=1[/url][/url]

Subject should say "Graining"

Edited by radiobuck, 23 July 2007 - 07:34 PM.

[JohnQuixote]

Many times a diamond grading report will list surface graining, pinpoints, additional clouds, etc. as 'not shown.' The diamond's report is just noting that these things exist for sake of thoroughness. To draw them would make them appear far more intense than they actually are, and would give a false impression of the diamond's clarity grade. 'Not shown' means they are non-issues.

Surface Graining is diamond structural irregularity. You can see it with a microscope. The diamond graining may resemble faint facet junction lines, or cause a grooved or wavy surface. They look like polishing lines, but they often cross facet junctions where polishing lines don't. It is a natural characteristic of the diamond crystal, and not a reflection of the diamond's cut quality.

Edited by JohnQuixote, 23 July 2007 - 10:18 PM.