The four gemstones from Yunnan province, China

Released: June 10, 2018 | Volume 33 Issue 1-4 Pages 3-12

Ayano Nakajima

Examination of Artificially Coloring of Diamonds

Released: January 16, 2017 | Volume 15 Issue 1-4 Pages 3-11

Iwao Umeda, Koichi Iida

Mineralogical characteristics of jadeites in some localities of the world

Released: January 16, 2017 | Volume 32 Issue 1-4 Pages 3-16

Masahiko Hayashi, Ｍａｓａｎｏｂｕ Ｓａｋａｍｉ, Mana Yasui, Atsushi Yamazaki, Sadao Tsutsumi

[title in Japanese]

Released: January 16, 2017 | Volume 23 Issue 1-4 KJ00005607791

Colorimetry of Colored Gem Stones : Comparative Study Colorimeter with the Visual Color Sensation of Gem Stones

Released: January 16, 2017 | Volume 24 Issue 1-4 Pages 3-12

Kaori Miki, Yasushi Takahashi