Photography of Diamond Inclusion Knots
Knot inclusions are naturally occurring external inclusions or imperfections that penetrate the surface (convex), appearing as a raised area on the diamond's surface. Knot diamond inclusions can potentially be the cause of man-made drag-line inclusions.
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 Knot inclusion 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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