Diamond weight estimate when mounted, How To?

Gem Related Discussion
1

Hello
I am wondering how one goes about estimating the carat weight of a diamond when it is mounted in a way that does not allow one to measure the depth.
I do know the basic formula for diamond weight estimates but if I cannot measure the depth due to limitations how do I estimate the carat size?

Thanks in advance
Vanessa

2

If you can’t measure its only guessing left.
Check this calculator :
Gemstone Carat Weight Estimation Calculator

3

Guessing doesn’t seem at all ethical or professional when appraising, there must be a better answer than guessing.

4

Ethical? I think you have to understand if you can’t see the depth you have to take it out. Go to a professional that can manage that. That person will be able to put it back again. Or else it’s just estimate of depth. Better if there is a photo so we can see what you are talking about. It was you who did say estimate not to find out specific.