Marquise help, pls

[emeraldemerald]

Hi, can someone pls help me assess if both arrows in this marquise will appear bright face up, or will only 1 light up at a time?

Based on JA video, it seems only 1 will be bright face up.

0.43 Carat marquise diamond

This marquise cut 0.43 carat D color if clarity has a diamond grading report from GIA

www.jamesallen.com

Based on this video, it seems both are bright face up.

Engagement Rings, Loose Diamonds and Fine Jewelry at Adiamor

Shop gorgeous engagement rings, stunning certified loose diamonds, and handcrafted fine jewelry and get expert guidance plus truly unbelievable prices.

www.adiamor.com

I'm confused why it looks different face up in different videos. Thanks so much for your help.

 

[RMOO]

They aren't both taken from the same view point. the JA stone is laying at a ~45 degree angle because it is laying on one side of the pavilion. The Adiamor stone is standing on its point. Where the lights are will also effect the appearance.

 

[Garry H (Cut Nut)]

The main difference is the JA video has a lens a bit closer or it is larger than the AD set up. In real life this should be a very nicely cut stone. Rare for D IF where the stone is generally pushed (or pulled) in carat weight to the next big price jump (0.45ct or 0.50ct).

 

[emeraldemerald]

@RMOO @Garry H (Cut Nut) Thanks for sharing your thoughts on the videography. I think that it will look good irl too. However, I'm wondering if both arrows will light up and go dark at the same time. I bought one before where when one arrow lit up, other went dark which I didn't prefer. Based on both videos, is there any way to tell if both will react to light, ignoring tilt angle, similarly at the same time? Or can one only tell with it on hand? Thanks for your help

 

[Garry H (Cut Nut)]

@RMOO @Garry H (Cut Nut) Thanks for sharing your thoughts on the videography. I think that it will look good irl too but my concern is whether both arrows will light up and go dark at same time. I bought one before where when one arrow lit up, other went dark which I didn't prefer. Based on both videos, is there any way to tell if both will react to light, ignoring tilt angle, similarly at same time? Or can one only tell with it on hand? Thanks for your help

You have 2 eyes. Part of the effect is that one eye sees what the other doesnt and when that happens its the bees knees bestest. It means the dark zones can not be persistant like bad bowties.
It creates a visual disonance in your mind when the 2 signals from each eye are in contrast - the true brilliance effect.