A Consumer's Guide to Understanding Diamond Fluorescence
18:58
A Consumer's Guide to Understanding Lower Half Facet Length
10:23
Comment reconnaître un vrai diamant ?
21:32
Understanding GIA Diamond Color Part 3: Aspects that will make diamonds appear whiter.
10:06
JANNPAUL Education: Why Does My Diamond Look so Dark?
27:47
Polariscope Tutorial by Nick Hodgson of Astrogems
20:44
Understanding GIA Diamond Color Part 2: What Diamond Color Is
7:27
Fluorescent Diamonds and Emeralds
12:46