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Quadex stud specs

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0515vision

Brilliant_Rock
Joined
Jan 16, 2023
Messages
1,244
Hello PSers!
I've got my heart set on a pair of quadex studs and have a few questions.

1. Are there vendors other than Brian Gavin who sell ideal cut quadex stones? Blue Niles has a few under the radiant Astor cut category, but I haven't found another site.

2. The BG website shows brilliance, sparkle, fire and office lighting videos. As a newbie, the easiest parameter for me to measure is fire, so maybe I'm putting too much emphasis on that. Initially, I was going to buy the pair that had the most fire.

3. I'm planning on setting the prongs NSEW in order to show off the cute corners. Has anyone else done that? If so, can you post a photo?

4. Can you help me understand quadex ASET and H&A images? They all look so similar. I posted two diamonds below. The 1.068 J has so much more fire to my eye, as compared to the 4.12 F, so I would lean toward that one (and other stones like it). But maybe there are other factors that I'm missing on the ASET and H&A images?

https://www.briangavindiamonds.com/collections/diamonds/products/1-068-j-vvs2-signature-quadex
https://www.briangavindiamonds.com/collections/diamonds/products/0-412-f-vvs1-signature-quadex

1.068 J images:

1068J ASET.png1068J H&A.png

4.12 F images:

412F ASET.png412F H&A.png


* I didn't post the stones I'm interested in yet bc I don't want someone to sneak them out from under me :lol:

Any information is helpful. Thanks in advance!
 

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  • 1068J H&A.png
    1068J H&A.png
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Quadex is a BG patented cut, if I recall correctly...you won't find it anywhere else.

ASET will read very similar as rounds... The darker the red across the entire diameter/edge to edge, the better...BG has strict requirements, so all Quadex diamonds will be stout performers.

Don't worry about hyper-scrutinizing the videos...they will all perform identical enough that you won't be able to discern any differences if two similar size Quadex were sitting side by side. :)
 
Here's an asscher that's kite-set.

asscher-cut-engagement-rings-4797677_ashley_zhang_V2-41935ebb804b4f5087fc1afbfc904814.png
 
Thx @DejaWiz for relieving me of combing those all those videos for the best of the best. If it's a BG signature cut, I'll just relax and pick a pair that these newbies eyes like.

Thx @Kim N for the photo of the asscher! That's exactly what I had in mind <3

I'm surprised there aren't more ppl who do this type of cut. I love the brilliance since asschers and other step cuts don't seem to have that much sparkle. The geometry of asschers and emeralds fascinate me but doesn't make me want to pull out my credit card. :lol:
 
Yup, BGD is the only vendor who cuts/sells quadex stones. Some similar ones can be found on JA or BN but they arent patented and likely wont be cut to as strict standards
 
I really do not like using diagonal dimensions - I think when AGS decided to add that option it was the beginning of the end.
If they must do this surely they should apply it to many other shapes?
And which of the widths is displayed - the narrowest, average or largest?
This Princess cut would be 5.49x7.70mm
1674096656333.png
 
Garry H (Cut Nut) said:
I really do not like using diagonal dimensions - I think when AGS decided to add that option it was the beginning of the end.
If they must do this surely they should apply it to many other shapes?
And which of the widths is displayed - the narrowest, average or largest?
This Princess cut would be 5.49x7.70mm
Click to expand...
Yes, I got confused with their dimensions until the BGD rep explained that they use diagonal dimensions. What use is a hypotenuse??? :lol:
 
0515vision said:
Hello PSers!
I've got my heart set on a pair of quadex studs and have a few questions.

1. Are there vendors other than Brian Gavin who sell ideal cut quadex stones? Blue Niles has a few under the radiant Astor cut category, but I haven't found another site.

2. The BG website shows brilliance, sparkle, fire and office lighting videos. As a newbie, the easiest parameter for me to measure is fire, so maybe I'm putting too much emphasis on that. Initially, I was going to buy the pair that had the most fire.

3. I'm planning on setting the prongs NSEW in order to show off the cute corners. Has anyone else done that? If so, can you post a photo? A lot about plastic surgery here cosmetic practice everywhere!

4. Can you help me understand quadex ASET and H&A images? They all look so similar. I posted two diamonds below. The 1.068 J has so much more fire to my eye, as compared to the 4.12 F, so I would lean toward that one (and other stones like it). But maybe there are other factors that I'm missing on the ASET and H&A images?

https://www.briangavindiamonds.com/collections/diamonds/products/1-068-j-vvs2-signature-quadex
https://www.briangavindiamonds.com/collections/diamonds/products/0-412-f-vvs1-signature-quadex

1.068 J images:

1068J ASET.png1068J H&A.png

4.12 F images:

412F ASET.png412F H&A.png


* I didn't post the stones I'm interested in yet bc I don't want someone to sneak them out from under me :lol:

Any information is helpful. Thanks in advance!
Click to expand...

I would take care of it myself! Some of the questions here will help you! I am now collecting information and laying it out on the shelves)))) I hope they will answer you and I will also learn)))
 
I think the reason AGSL added that option was to support manufacturers of certain square and rectangular stones who felt the greater depth percentages generated by the traditional calculation was somewhat prejudicial. The significantly higher depth percentages appearing on the report (vis a vis rounds) tend to convey the notion, somewhat misleadingly, of a lot of hidden weight.

There is logic to it; round depth percentage is calculated using the average of max and min diameter (divided by total depth). The max on a square or rectangular would be the diagonal and the average between that and the shorter of the two length/width sides would be larger, resulting in lower depth percentage.

But I don't think AGSL ever used the diagonal measurement in reporting the dimensions, just length and width. That would be very confusing to a consumer.
 
Last edited:
Texas Leaguer said:
I think the reason AGSL added that option was to support manufacturers of certain square and rectangular stones who felt the greater depth percentages generated by the traditional calculation was somewhat prejudicial. The significantly higher depth percentages appearing on the report (vis a vis rounds) tend to convey the notion, somewhat misleadingly, of a lot of hidden weight.

There is logic to it; round depth percentage is calculated using the average of max and min diameter (divided by total depth). The max on a square or rectangular would be the diagonal and the average between that and the shorter of the two length/width sides would be larger, resulting in lower depth percentage.

But I don't think AGSL ever used the diagonal measurement in reporting the dimensions, just length and width. That would be very confusing to a consumer.
Click to expand...

Misleading is misleading. Depth is depth and the formula is the formula Bryan.
Trade is trade. Consumers are consumers who are being fooled.
 
Garry H (Cut Nut) said:
Misleading is misleading. Depth is depth and the formula is the formula Bryan.
Trade is trade. Consumers are consumers who are being fooled.
Click to expand...

I agree 100%.
On top of that I think it backfired and created confusion and actually may have hurt sales.
 
My personal concern with choosing non-round studs is the possibility of the studs rotating in the ear.
 
molecule said:
My personal concern with choosing non-round studs is the possibility of the studs rotating in the ear.
Click to expand...

One of my staff wears 1ct each baguettes and they sit really well with large butterflys and a groove in the post in the right spot.
And Karl, I agree. Self inficted reputational damage.
 
molecule said:
My personal concern with choosing non-round studs is the possibility of the studs rotating in the ear.
Click to expand...

Exactly why I don’t want true square studs. I love the quasi-hexagonal shape of these (and asschers and square radiants) and hope the NSEW prongs will accentuate that even further. If not, then I just call it a failed experiment and punt to rounds.
 
Red and blue.
Blue is meaningless.
Not sure if red is L or W or should be average!
 
Garry H (Cut Nut) said:
Red and blue.
Blue is meaningless.
Not sure if red is L or W or should be average!
Click to expand...

Garry, you wrote "blue" twice. Could you clarify?
Red & blue are the reported measurements, and yellow is meaningless?
 
0515vision said:
Garry, you wrote "blue" twice. Could you clarify?
Red & blue are the reported measurements, and yellow is meaningless?
Click to expand...

The blue number or value is meaningless - it is the diagonal that I have never seen used other than AGS of these stones.
red and blue are the 2 values.
Its all bad and wrong IMHO
 
Thx @Texas Leaguer and @lovedogs! That green measurement tracks. Over the phone she said, "upper right corner to down left corner," and I couldn't understand.

Before I put in an order, I'm trying to visualize the face up area of a quadex as compared to a RB. Want to get my sizing right both for my ear and my wallet. :lol:
 
I prefer the smaller stone. There is some asymmetry on the larger stone that would keep it from being mind-clean for me (I don't always care, but I would at that price point)
 
musicloveranthony said:
I prefer the smaller stone. There is some asymmetry on the larger stone that would keep it from being mind-clean for me (I don't always care, but I would at that price point)
Click to expand...

I love the term "mind-clean!" Yes, that's a major hurdle in diamond adventures :lol:
 
I got a video! ... but I can't seem to attach an mp4. So here are some stills.
They are J, and I bought a G solitaire (w/o y'all's help so I'm crossing my fingers I still love it now that I've learned a ton in the past 2 weeks).

What color do they appear to your expert eyes? Will they be fine on the ears, or will they look rather warm? I know ultimately it's a personal choice, but the letter J feels scary since so many ppl buy G or H for the ears.

Also, do you see anything that makes you hesitate?

And at the risk of someone else snatching them, here are the links. The 0.36 is closer to the palm, 0.368 is closer to the fingertips.

https://www.briangavindiamonds.com/collections/diamonds/products/0-36-j-si1-signature-quadex

https://www.briangavindiamonds.com/collections/diamonds/products/0-368-j-si1-signature-quadex
Thanks in advance to all! :)

Screen Shot 2023-01-20 at 9.41.12 AM.pngScreen Shot 2023-01-20 at 9.41.57 AM.pngScreen Shot 2023-01-20 at 9.41.29 AM.pngScreen Shot 2023-01-20 at 9.41.44 AM.png
 
Last edited:
0515vision said:
I got a video! ... but I can't seem to attach an mp4. So here are some stills.
They are J, and I bought a G solitaire (w/o y'all's help so I'm crossing my fingers I still love it now that I've learned a ton in the past 2 weeks).

What color do they appear to your expert eyes? Will they be fine on the ears, or will they look rather warm? I know ultimately it's a personal choice, but the letter J feels scary since so many ppl buy G or H for the ears.

Also, do you see anything that makes you hesitate?

And at the risk of someone else snatching them, here are the links. The 0.36 is closer to the palm, 0.368 is closer to the fingertips.

https://www.briangavindiamonds.com/collections/diamonds/products/0-36-j-si1-signature-quadex

https://www.briangavindiamonds.com/collections/diamonds/products/0-368-j-si1-signature-quadex
Thanks in advance to all! :)

Screen Shot 2023-01-20 at 9.41.12 AM.pngScreen Shot 2023-01-20 at 9.41.57 AM.pngScreen Shot 2023-01-20 at 9.41.29 AM.pngScreen Shot 2023-01-20 at 9.41.44 AM.png
Click to expand...

I have a half carat G quadex bezel pendant and .33 ct each I color ACA studs in an 8 prong setting. Eventually I’ll upgrade the studs in color if not size but I know no one is close enough or paying enough attention to notice the color difference (I can tell, but the bright white return of the earrings dominates despite some extra warmth from the yellow gold setting and my red hair). So I think you will be fine as long as you aren’t longing for super white on your ears.
 
josieKat said:
I have a half carat G quadex bezel pendant and .33 ct each I color ACA studs in an 8 prong setting. Eventually I’ll upgrade the studs in color if not size but I know no one is close enough or paying enough attention to notice the color difference (I can tell, but the bright white return of the earrings dominates despite some extra warmth from the yellow gold setting and my red hair). So I think you will be fine as long as you aren’t longing for super white on your ears.
Click to expand...

Thx @josieKat! I forgot about the hair factor. Mine is black, so studs are gonna look relatively bright, no matter what. :)
 
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