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- Title
NATURAL TYPE IA DIAMOND WITH GREEN-YELLOW COLOR DUE TO NI-RELATED DEFECTS.
- Authors
Wang, Wuyi; Hall, Matthew; Breeding, Christopher M.
- Abstract
Commonly seen in HPHT-grown synthetic diamonds with a green component, nickel-related defects were identified for the first time in a type Ia natural diamond with a strong green component. The 1.75 ct Fancy green-yellow diamond showed a strong peak at 1332 cm-1 in the IR absorption spectrum, strong absorption from the 1.40 eV center and the associated ~685 nm band in the Vis-NIR spectrum, and extremely strong emissions from Ni-related defects in the photoluminescence spectra--all of which proved that nickel was the primary cause of the green color.
- Subjects
NATIVE element minerals; GEMS &; precious stones; DIAMONDS; NICKEL; GREEN; GEMOLOGY
- Publication
Gems & Gemology, 2007, Vol 43, Issue 3, p240
- ISSN
0016-626X
- Publication type
Article
- DOI
10.5741/GEMS.43.3.240