gemstone

When cutting most pleochroic gemstones (Iolite, Tanzanite, Kunzite etc.), lapidaries typically try to minimize the pleochroism and maximize the single most prominent color.

在切割大向色性宝石时（石、坦桑宝石、紫锂辉石等），通常宝石匠会尽量缩小向色性并最大化地将某一主色凸显出来。

Luminiferous gem is the man made modern night shining jewel developed with modern technology by research workers and caused strong echo in gemstone circle.

发光宝石是近期由我国科学工作者依靠现代科学技术研制出“现代夜明珠”,在宝石界引起强烈反响。