Internal Carbon Pique Diamond Inclusion Photography
Piqué are tiny black spots caused by undigested carbon inclusions (natts). Black material found within internal fracture planes can also be particles or crystallographic inclusions of graphite, ferropericlase, pyrrhotite and pentlandite.
Microscopic Carbon Picque Inclusions
Hexagonal Platelet Inclusion in Trillion
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.
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