TypeⅡa 天然ピンクダイアモンドのフォトルミネッセンス ピーク H3, 535.8nm

上杉 初; 齊藤 宏; 小滝 達也

doi:10.14915/gsj.40.0_9

2018 Annual Meeting

DOI https://doi.org/10.14915/gsj.40.0_9

Conference information

Host: The Gemmological Society of Japan

Abstracts of Lectures at 2018 Annual Meeting of the Gemmological Society of Japan

PHOTOLUMINESCENCE PEAKS H3,535.8nm IN TYPEⅡa NATURAL PINK DIAMONDS

Hajime Uesugi, *Hiroshi Saito, Tatsuya Odaki

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Keywords: photoluminescence, typeⅡa, pink diamonds

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 9

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Abstract

We examined 30 type Ⅱa natural pink and brown diamonds using photoluminescence spectroscopy to compare 535.8nm and H3 peak. Among of 20 pink and 8 brown diamonds exhibited weak 535.8nm peak below 1.5 of intensity ratio, and 21 pink and 11 brown diamonds exhibited FWHM of H3 less than 0.6nm. Consequently,15 pink and 4 brown exhibited both characteristics.

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