GemologyOnline.com

Bruce Tourm - Love the idea that fluorescence in colored gems can enhance color, as well as reduce color in diamonds with the complimentary effect!
I have researched this topic to death, and last week did a webinar with Branko Dejalin, the Vancouver based scientist who runs a lab there.
Dr. Yun Luo ...

A compelling scientific analysis of the many misconceptions we harbor on the effects of fluorescence and diamonds.

Excellent! ⭐️⭐️⭐️⭐️⭐️

https://www.youtube.com/watch?v=FpNKBVpU0gU
I was studying this subject with an Aussie retired gemologist friend and we were close to publishing what we were ...

Hi,
I was talking about Gemological Tools Professional? Is Diamcalc no loger available? The recut function in GTI is very easy to use and provides a 2D profile image of what the stone was, and what is will be after recut, making the calculation of weight loss.
I will have a look at GemCad.
Thank ...

For the same reason the US government and India are supporting grown diamonds.
It is part of a global commercial war.
Explain, please.
India and USA have the most to win from LGDs. Those two countries governments are supporting the man-made diamond business aggressively.
Why? Having no mines ...

In secret.
Bill Boyajian as President was pushed onto his sword.
A very sad day as he made GIA what it is today.
They replaced him with a lawyer.

After the publication of the article linked below - Will GIA Grade and Rate Diamond Transparency?
I understand that this issue is currently rated as an unmentioned factor under diamond clarity (by lowering the grade). I believe that is not in the interests of consumers as they do not understand the ...

For the same reason the US government and India are supporting grown diamonds.
It is part of a global commercial war.

Hi,

I have been using the recut function of GTI, for years with great satisfaction. The shortcoming of the program, for me at least, is that I can only use it for round stones.
Is anybody aware of a similar program that could be used with different shapes than round?

Thank you in advance for your ...