- journal_title：American Mineralogist
- Contributor：Maria Perraki ; Andrey V. Korsakov ; David C. Smith ; Evripidis Mposkos
- Publisher：Mineralogical Society of America
- Date：2009-
- Format：text/html
- Language：en
- Identifier：10.2138/am.2009.2973
- journal_abbrev：American Mineralogist
- issn：0003-004X
- volume：94
- issue：4
- firstpage：546
- section：Articles
Natural diamond from three ultrahigh-pressure metamorphic (UHPM) terranes (Erzgebirge Massif, Germany; Kokchetav Massif, Northern Kazakhstan; Rhodope Metamorphic Province, Greece) and synthetic diamond from cutting and polishing materials (paste, spray, saw blade) were studied by means of optical microscopy and Raman microspectroscopy, to constitute a new petrographic and spectroscopic data set that might be a useful tool for identifying and characterizing metamorphic diamond. Several criteria are established for distinguishing natural microdiamond identified in a rock thin section from the externally introduced ones [i.e., diamond as residual particles (contaminants) from the cutting and polishing material] such as the diamond size, the presence of inclusions, coatings, or coexistent phases and two diamond Raman band parameters, i.e., the Raman shift and the full-width at half maximum height (FWHM).