LPHT 処理されたピンク CVD 合成ダイヤモンド

北脇 裕士; 江森 健太郎; 久永 美生; 山本 正博; 岡野 誠

doi:10.14915/gsj.40.0_10

2018 Annual Meeting

DOI https://doi.org/10.14915/gsj.40.0_10

Conference information

Host: The Gemmological Society of Japan

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

LPHT-treated Pink CVD Synthetic Diamond

*Hiroshi Kitawaki, Kentaro Emori, Mio Hisanaga, Masahiro Yamamoto, Makoto Okano

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Keywords: LPHT-treated, CVD synthetic, Identification

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 10

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Abstract

A pink CVD synthetic diamond treated with low-pressure high-temperature (LPHT) annealing has been examined. The irradiation-related peaks of 1450 cm-1 (H1a), 741.1 nm (GR1), 594.3 nm and 393.5 nm (ND1) that are seen in common pink CVD synthetic diamonds treated with multi-step processes were absent in this sample. Meanwhile, absorption peas at 7917, 7814, 3123 and 1374 cm-1 in infrared region and at 667 and 684 nm in visible range were detected.

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