Burma (Myanmar) and Guatemala are the principal sources of modern gem jadeitite, and Canada of modern lapidary nephrite.

缅甸和危地马拉是现代主要地，而加拿大是现代宝石主要地。

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

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