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

缅甸和危地马拉代翡翠主要地，而加拿代宝石主要地。

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

在切割向色性类宝石时（如堇青石、坦桑宝石、紫锂辉石等），通常宝石匠会尽量缩小向色性并最化地将某一主色凸显出来。