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

缅甸和危地马代翡翠的主要地，而加拿大代石的主要地。

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

在切割大多数的多向色性类石时（如堇青石、石、紫锂辉石等），通常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。