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Eye Clean?

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AsscherLooking

Rough_Rock
Joined
Apr 21, 2014
Messages
3
Hello,

I'm looking for an asscher stone and I found the following G SI1 stone. I'm concerned though because the GIA report shows quite a bit of inclusions on the table and the magnification shows a possible carbon spot.

What I'm wondering is if this stone will be eye clean? Will you be able to see the pretty sizable carbon spot with the naked eye? What do you think?

http://www.belgiumny.com/Real%20Images/43675.jpg

Thanks in advance!
 
I think it won't be. Any dark inclusion in the table area is bound to be seen, and inclusions are even more readily seen in step cut stones. Look for one in the VS range or better is the usual advice.
 
As a very experienced GIA supervisor of diamond grading I feel I need to explain to future PS inquiries on eye clean. GIA defines eye visible as a consumer being able to see an inclusion without the aide of a 10 power loupe from 12 inches. In my years of grading at GIA a diamond that receives an SI1 grade had better be very wrong in clarity or the buyer would have super vision as well as years of experience looking at diamonds and louping inclusions. There are so many beautiful stones out there that are more affordable at higher colors or larger carat sizes that new buyers should not pass up. I hope there are many out there that read this and listen. Most people cannot with the naked eye see the difference between an SI1 and any clarity higher then an Si1.
 
30yearsofdiamonds|1398124769|3657436 said:
As a very experienced GIA supervisor of diamond grading I feel I need to explain to future PS inquiries on eye clean. GIA defines eye visible as a consumer being able to see an inclusion without the aide of a 10 power loupe from 12 inches. In my years of grading at GIA a diamond that receives an SI1 grade had better be very wrong in clarity or the buyer would have super vision as well as years of experience looking at diamonds and louping inclusions. There are so many beautiful stones out there that are more affordable at higher colors or larger carat sizes that new buyers should not pass up. I hope there are many out there that read this and listen. Most people cannot with the naked eye see the difference between an SI1 and any clarity higher then an Si1.
Click to expand...
Maybe depending on the viewer's age and size of the stone? . when you get to my age every stone looks eye clean.. :lol:
 
Holy smokes, that image is massive. How big is the diamond IRL?

If it's small you'll never see that inclusion. If it's 10+ carats maybe you will? If this is the grade-setter I'd agree it's SI1. One note about the picture (apart from 'big'): Only the photographer knows the specific lighting used, but if it's being illuminated from the sides (darkfield) the inclusion may be darker in this photo than it ever will be in normal light.

As to eye-clean, you will need to ask someone with the diamond in-hand. That is the only way to match your expectation with the specific diamond. In that sense, be sure to know your personal definition: At what distance? Under what lighting? From top only, or top and sides? Viewed by who? (a 16 year old will stand a better chance of picking it out than a 50 year old due to presbyopia).

It's in the seller's interest to be perfectly honest and candid with you when you ask these questions.
 
GIA defines eye visible as a consumer being able to see an inclusion without the aide of a 10 power loupe from 12 inches
Click to expand...

:D Advice to buyers, as others stated: Always define your own personal standard for "eyeclean enough" and then make sure that the stone is "eyeclean enough" to suit you
 
The stone (in the original post) is 1.56ct G SI1... it just surprised me that this stone was rated SI1 with that many inclusions (and the sizable carbon flaw).

Like John said, I have no idea what kind of lighting was used, but I've seen other SI1 asscher stones with the same magnification (and seems like the same lighting) that don't have any inclusions.... like this one which is a 1.50 G SI1:

http://www.pkstone.co.in/PK/bwcopy/109102802B.jpg
 
AsscherLooking|1398128649|3657487 said:
The stone (in the original post) is 1.56ct G SI1... it just surprised me that this stone was rated SI1 with that many inclusions (and the sizable carbon flaw).

Like John said, I have no idea what kind of lighting was used, but I've seen other SI1 asscher stones with the same magnification (and seems like the same lighting) that don't have any inclusions.... like this one which is a 1.50 G SI1:

http://www.pkstone.co.in/PK/bwcopy/109102802B.jpg
Click to expand...
It may be useful to point out that 2D photos have limited depth-of-field, meaning some inclusions may not appear.

In real life one can loupe a diamond to get an initial idea of clarity, then relax the eye and look through the stone layer by layer. Under a microscope this can done by starting with the table and slowly descending through the diamond by manipulating depth of focus. In fact, one of my favorite aspects of diamond-stalking is going high-zoom and then watching characteristics swim into focus as I reach their depth.

Cameras have f-stop setting that can include more/less focal depth in a photo, but it's a trade-off. A photo that clearly shows one inclusion can leave others at different depths fuzzy, indistinct or omitted. It's just one of the limitations of 2D macro photography.
 
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