期刊： GEMS & GEMOLOGY, 2021; 57 (1)
Zhushan County is the most abundant source of commercial turquoise in China's Hubei Province, where mass production has been ongoing for several decad......
期刊： GEMS & GEMOLOGY, 2021; 57 (2)
Color origin is an important part of pearl identification for gemological laboratories. Freshwater cultured pearls can exhibit a wide range of colors,......
期刊： GEMS & GEMOLOGY, 2020; 56 (1)
Aquamarine and heliodor are colored by Fe ions, an important coloring agent for beryl. Blue to yellow gem beryl was studied by quantitative spectrosco......
期刊： GEMS & GEMOLOGY, 2020; 56 (1)
Craftsmanship is a key element in Chinese jade carving art. In recent decades, the rapid development of tools has led to numerous changes in carving t......
期刊： GEMS & GEMOLOGY, 2020; 56 (2)
Hydrogen and oxygen stable isotope ratios of dolomite-related nephrites around the world were studied using data from the literature (n = 120). These ......
