Automatic jewelry identification and evaluation based on imaging-assisted Raman spectroscopy

Tsung-Han Tsai; Hiroshi Takahashi

doi:10.1117/12.2631779

3 October 2022 Automatic jewelry identification and evaluation based on imaging-assisted Raman spectroscopy

Tsung-Han Tsai, Hiroshi Takahashi

Proceedings Volume 12216, Novel Optical Systems, Methods, and Applications XXV; 1221609 (2022) https://doi.org/10.1117/12.2631779
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

Gemstone identification and evaluation for jewelry pieces are limited by the interference from the surrounding metal mount and adjacent gemstones. To maintain transparency in the jewelry market, here we propose an imaging-assisted scanning Raman/photoluminescence(PL) spectroscopy for mounted gemstone measurement. The system can automatically align and measure multiple gemstones samples on a jewelry piece sequentially. The experimental prototype demonstrates capability of noninvasively measurement for separating natural diamond from its lab-grown counterparts and diamond simulants, identifying popular color gemstones, and using the color image for gemstone color evaluation and weight estimation.

Conference Presentation

Citation Download Citation

Tsung-Han Tsai and Hiroshi Takahashi "Automatic jewelry identification and evaluation based on imaging-assisted Raman spectroscopy", Proc. SPIE 12216, Novel Optical Systems, Methods, and Applications XXV, 1221609 (3 October 2022); https://doi.org/10.1117/12.2631779

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