jbase16|1359985568|3371830 said:This is graded SI1 according to GIA with some twinning wisps. Based on this picture, can anyone determine if this is eye-clean? Thank you!
John Pollard|1359987180|3371846 said:jbase16|1359985568|3371830 said:This is graded SI1 according to GIA with some twinning wisps. Based on this picture, can anyone determine if this is eye-clean? Thank you!
It's impossible to tell from a photo.
LaraOnline|1359991037|3371875 said:John Pollard|1359987180|3371846 said:jbase16|1359985568|3371830 said:This is graded SI1 according to GIA with some twinning wisps. Based on this picture, can anyone determine if this is eye-clean? Thank you!
It's impossible to tell from a photo.
...my understanding is that twinning wisps can be considered a 'good' inclusion to have, as opposed to other inclusion types ... iykwim
John Pollard|1359993761|3371901 said:LaraOnline|1359991037|3371875 said:John Pollard|1359987180|3371846 said:jbase16|1359985568|3371830 said:This is graded SI1 according to GIA with some twinning wisps. Based on this picture, can anyone determine if this is eye-clean? Thank you!
It's impossible to tell from a photo.
...my understanding is that twinning wisps can be considered a 'good' inclusion to have, as opposed to other inclusion types ... iykwim
If you're talking about eye-visibility, yes - twinning wisps can be pretty 'quiet', depending on size, position and relief.
The problem with a photo is that it renders a 3D object into 2D, and whether any given inclusion is visible depends on many variables such as lighting. Most notably, focal depth plays a key part in whether something appears in a macro-photo or not. If you adjust focus to the table, inclusions at the girdle plane may not appear. If you adjust focus to the girdle, inclusions near the table or in the pavilion may not appear. In the lab diamond graders use microscopes to descend-and-ascend through the body of the diamond, to assess and plot inclusions.
There's still no substitute for human vision. Even then, vision differs. Younger eyes are generally better at spotting inclusions than older eyes due to presbyopia, which affects everyone at some point. It's one nice thing about aging: More and more diamonds look "clean" as you approach your golden years.
You're welcome. While I wouldn't bet the farm on what the overall percentages are when it comes to any one diamond, I find the majority of GIA SI1s in common sizes to be eye-clean to average vision.jbase16|1359994132|3371908 said:John Pollard|1359993761|3371901 said:LaraOnline|1359991037|3371875 said:John Pollard|1359987180|3371846 said:jbase16|1359985568|3371830 said:This is graded SI1 according to GIA with some twinning wisps. Based on this picture, can anyone determine if this is eye-clean? Thank you!
It's impossible to tell from a photo.
...my understanding is that twinning wisps can be considered a 'good' inclusion to have, as opposed to other inclusion types ... iykwim
If you're talking about eye-visibility, yes - twinning wisps can be pretty 'quiet', depending on size, position and relief.
The problem with a photo is that it renders a 3D object into 2D, and whether any given inclusion is visible depends on many variables such as lighting. Most notably, focal depth plays a key part in whether something appears in a macro-photo or not. If you adjust focus to the table, inclusions at the girdle plane may not appear. If you adjust focus to the girdle, inclusions near the table or in the pavilion may not appear. In the lab diamond graders use microscopes to descend-and-ascend through the body of the diamond, to assess and plot inclusions.
There's still no substitute for human vision. Even then, vision differs. Younger eyes are generally better at spotting inclusions than older eyes due to presbyopia, which affects everyone at some point. It's one nice thing about aging: More and more diamonds look "clean" as you approach your golden years.
thanks for your thoughts and insight. I have the vendor checking for eye-cleanliness but that's the only thing I can rely on before making a decision to purchase the stone. they do have a 30 day full refund policy. do you know how often gia SI1 grades are eye-clean vs. non eye-clean, in general?
John Pollard|1359996160|3371926 said:And how old is the person making the judgment?
Some sellers might not understand the nature of the last question but it is relevant per my prior comments. I suspect, if you're dealing with a frequent internet seller, they will understand - and probably have a 20-20 20-something staffer tapped to make their pronouncements.
jbase16|1359996831|3371938 said:OK, vendor (b2C) said that it is 100% eye clean. Here are the details:
1.62, H, SI1, 61.7 Depth, 58 Table, 7.44 X 6.54
GIA Report:
They put it on hold for me...any thoughts if I should pull the trigger? Thank you!
04diamond<3|1359997622|3371951 said:jbase16|1359996831|3371938 said:OK, vendor (b2C) said that it is 100% eye clean. Here are the details:
1.62, H, SI1, 61.7 Depth, 58 Table, 7.44 X 6.54
GIA Report:
They put it on hold for me...any thoughts if I should pull the trigger? Thank you!
Still looks good to me!![]()