Ultrahigh-Pressure Metamorphic Graphite and Diamond
From the Kokchetav Massif, Northern Kazakhstan
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SEM images of diamond crystals from the Kokchetav Massif
from which the
graphite coating has been completely or partially removed.
(Click on images to see higher resolution images.)
SEM images of diamond crystals, form which the graphite coating wascompletely removed by dissolution in a mixture of H2SO4+K2Cr2O7. 
SEM images of diamond crystals, form which the graphite coating waspartly removed by dissolution in a mixture of H2SO4+K2Cr2O7.
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