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 Post subject: Educational Color Change/Shift Video & Grading System
PostPosted: Wed Jan 09, 2013 3:05 pm 
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Joined: Wed Nov 09, 2005 6:49 pm
Posts: 32
Location: Teofilo Otoni, Brazil
We created this video to illustrate what color change and color shift are and how they are graded in international gem trading centers.
We did not include how one evaluates or devaluates the price according to color movement in this video.

It's our hope that this will be useful
David Stanley Epstein
[youtube] https://www.youtube.com/watch?v=Gz6zEft-lF4 [/youtube]

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Gem Writer, book author (The Gem Merchant- How to be one-how to deal with one), Gem Sculptor, Consultant for gem buying and marketing - located in Brazil's gem trading center_Teofilo Otoni.


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