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色性并最大化地将某一主色凸显出来。
Pleochroism is an optical phenomenon in which a substance appears to be different colors when observed at different angles, especially with polarized light.