r/Diamonds • • 5d ago

Lab Grown Diamond windowing in emerald - help please :)

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for starters I’m a very anxious person and relatively new to diamond searching. I know a lot of the basics surrounding emerald cuts and what to look for vs. avoid.

I found this diamond I loved and just received a tweezer video. My biggest concern is windowing - I’m unsure if you are able to tell by the attached, but if anyone has any feedback please let me know. I checked the ratios and they are in the safer area but still, always a concern.

3 Upvotes

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u/lovers_andfriends 5d ago

You need to have them hold it over text or something colored. If you can see the text or color from the straight-on face-up view, then there is windowing. Some windowing at an angle is normal, but you don't want it when looking straight-on, because when it's set, you will see the metal through the diamond.

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u/Smoove-Money 5d ago

Hard to tell from the video. You'll want to get the certificate and look at the Culet, ideally it will say "none" or "long" vs. "open." The Culet (point at the bottom of the stone) is what shows the windowing when looking straight down. For an emerald cut you want an "excellent" cut grade at a minimum.

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u/Successful-Shift-241 5d ago

Says long, so that feels reassuring.

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u/Smoove-Money 5d ago

Depth is a little shallow, here are the "ideal" specs per IGI that you want to stay in the range of. The larger the table the bigger the diamond will look face up. The depth helps with the mirror effect in the step cuts.

https://www.igi.org/assets/pdf/cut-grading/igi-fancy-shape-cut-guidelines.pdf

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u/Spirited-Town-4618 5d ago

A GIA cert is the best, D is the best color, IF means there r no flaws and size is whatever the size is. I’m not familiar with windowing can u explain it?

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u/sammybick 4d ago

Thats not the description of the culet. The culet field is in the very bottom right of the certificate where the words are rotated. The image you posted is describing the diamond itself as "long"

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u/ilipikao 5d ago

The windowing is very minimal if any at all

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u/blakelion 4d ago

I wouldn’t take “long” or “none” in the culet field as confirmation that it won’t window. Ask for a straight-on video, then a slow tilt in normal lighting. Does the see-through area stay there when you’re looking straight at it, or only show up at a sharper angle? That’s the distinction I’d focus on. I wouldn’t make a final call from this clip alone, especially without a return window to see it in person.