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，拿大是现代宝石的主要。

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多向并最大化将某一主凸显出来。