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天然中空真珠および養殖無核真珠の鑑別 : 真珠
On the identification of hollow natural pearls and non-nucleated cultured pearls, J. M. Duroc-Danner, Journ. Gemmol., 20, 11-13, 1986
1987
Journal of The Gemmological Society of Japan
On the identification of hollow natural pearls and non-nucleated cultured pearls, J. M. Duroc-Danner, Journ. Gemmol., 20, 11-13, 1986
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