Abstract of Papers Presented at Annual Meeting of the Gemmological Society of Japan
2021 Annual Meeting
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Host: The Gemmological Society of Japan

Abstracts of Papers Presented at 2021 Online Meeting of the Gemmological Society of Japan
Study for deterioration of flood-damaged pearls
*Sayaka Tazawa, Sachiko Sakamoto, Yasunori Matsuda, Junko Yazaki
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Keywords: pearl’s deterioration, dessolution
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Abstract

We offered to repair pearl products which were suffered damage from a flood in Kumamoto prefecture in July, 2020. Therefore we researched what kind of deterioration of pearls were there. We observed damaged pearls with optical fiber and microscopy.

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