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Proceedings Paper

Optical Properties Of Some Natural Diamonds With High Hydrogen Content
Author(s): Emmanuel Fritsch; Kenneth V. G. Scarratt
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Paper Abstract

We have demonstrated for the first time that in diamonds some defects correlated with the presence of intense H-related infrared absorptions, also absorb in the visible range. These diamonds exhibit two types of optical absorption spectra, resulting in a browniqh yellow or gray color. We believe that the 1405 and 3107 cm-1 H-related infrared absorptions are not simply due to C-H vibrations, but rather to stretching modes of complexes involving hydrogen and nitrogen in all cases. These types of H-rich brownish yellow and gray diamonds - or sectors of particular stones - are probably the result of cuboid growth.

Paper Details

Date Published: 15 January 1989
PDF: 7 pages
Proc. SPIE 1146, Diamond Optics II, (15 January 1989); doi: 10.1117/12.962079
Show Author Affiliations
Emmanuel Fritsch, Gemoloqical Institute of America (United States)
Kenneth V. G. Scarratt, Gem Testing Laboratory of Great Britain (United Kingdom)

Published in SPIE Proceedings Vol. 1146:
Diamond Optics II
Albert Feldman; Sandor Holly, Editor(s)

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