Diamond Surface Graining (SGr) Photography
Surface Graining (SGr) is a natural imperfection or inclusion that creates visible surface lines which are caused by irregular crystallization during diamond formation.
All of the microscopic diamond inclusion photography on this page was generously contributed by the AGSL gemological testing laboratory in Las Vegas, Nevada, and is reproduced with their permission.
Diamond photography by Joe Vanells, Director of Gem Services at AGSL. No reproduction without written permission from AGSL - All rights reserved.
Back To: Diamond Inclusion Library
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