Find your diamond
Find your jewelry
shape
carat
color
clarity

Colored stones and window question

Green with Envy

Brilliant_Rock
Joined
Jun 25, 2007
Messages
970
If a colored stone (specifically a emerald cut green emerald) is cut too shallow and has a window in the center... when set properly in ring your finger will close the window so it is not obvious. However, wont the stone always lack sparkle in the area of the window?
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
37,367
A darker coloured stone will mask the window better if not too large, once set. The windowed area will lack sparkle but emerald has low RI and typically aren't sparkly in the first place.
 

Green with Envy

Brilliant_Rock
Joined
Jun 25, 2007
Messages
970
Would it have to be set in any particular way to make it look best? we are talking a 3 ct stone that ends up looking much larger because of extreme shallow cut... but top color and certified only treatment insignificant oil.
 

pregcurious

Ideal_Rock
Joined
Mar 18, 2009
Messages
6,724
A setting that stops light from getting in through the pavilion (sides/bottom) will hide a window best. For example, a setting with a small opening in the gallery. An open gallery setting will literally make a window out of your gem, and you will be able to see your finger when you wear the stone.
 

minousbijoux

Super_Ideal_Rock
Premium
Joined
Aug 5, 2010
Messages
12,337
The short answer is that the lack of sparkle will continue to be present in the stone. The longer explanation follows.

So the better the cutting - that is, the closer the stone type is cut to its critical angles - the more sparkle and scintillation the stone will have - up to the point of its inherent capability. When a stone is not well cut - it has not been cut to maximize light return - light leaks through or gets trapped within the stone instead of being reflected back in the form of sparkle. When a stone has a window, it means the stone has not been cut correctly to maximize light return (it could happen for any number of reasons: the stone was cut to preserve weight and is shallow; the cutter miscalculated the angles; inclusions in the rough needed to be removed, etc). so even if you are able to find a setting that reduces the appearance of the window, it hasn't changed the cutting of the stone, which will still have the same facet angles and lack proper light return. I hope that made sense?
 

pregcurious

Ideal_Rock
Joined
Mar 18, 2009
Messages
6,724
Just wanted to add one more thing...a closed gallery setting will appear to "close" only smaller windows. With large windows, you will just see the gallery. You can just test by putting the stone in different settings. It sounds like the window is your gem is too large to address with a setting.
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
37,367
I think there's one poster who added a backplate underneath the gallery to make the large window of her stone less obvious.
 

Green with Envy

Brilliant_Rock
Joined
Jun 25, 2007
Messages
970
yes- a backplate is exactly what would work best, but I have other options so will pass on the stone... it just looked so BIG for the ct weight! Better to get smaller well cut. Really appreciate the feedback.
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
37,367
Another thing to keep in mind the density of emerald - they look large for their carat weight, even if well cut.
 

pregcurious

Ideal_Rock
Joined
Mar 18, 2009
Messages
6,724
Green with Envy|1454593591|3986760 said:
yes- a backplate is exactly what would work best, but I have other options so will pass on the stone... it just looked so BIG for the ct weight! Better to get smaller well cut. Really appreciate the feedback.
Agreed. I small window is okay to me if the stone has amazing color and is rare/expensive.
 
Be a part of the community It's free, join today!
    Three-stone engagement ring upgrade
    Three-stone engagement ring upgrade
    Vintage OEC Bracelet
    Vintage OEC Bracelet
    June’s Birthstone Trinity
    June’s Birthstone Trinity

Need Something Special?

Get a quote from multiple trusted and vetted jewelers.

Holloway Cut Advisor



Diamond Eye Candy

Click to view full-size image.
Top