There are a number of techniques that diamond traders use to analyze and compare diamonds. Recently one of our customers needed to replace her showcase engagement ring diamond. Her busy schedule prohibited her from coming into our partner showroom, so we opted to go through the process of comparing diamonds remotely, taking HD video of her options and letting her pick. This video is a sample of what she used to determine which diamond she would pick as an upgrade to her engagement ring.

http://www.vimeo.com/3261882