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

缅甸和危马拉是现代翡翠的主要，加拿大是现代石的主要。

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石时（如堇青石、坦桑石、紫锂辉石等），通常石匠会尽量缩小多向色并最大化将某一主色凸显出来。