When cutting most pleochroic gemstones (Iolite, Tanzanite, Kunzite etc.), lapidaries typically try to minimize the pleochroism and maximize the single most prominent color.
在大多数的多向类石时(如堇青石、坦桑石、紫锂辉石等),通常石匠会尽量缩小多向最大化地将某一主凸显出来。
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Sapphire, for instance, is often pleochroic.
比如,蓝宝石常常具有多色性。
So pleochroic crystals seem to change color as you move your head, or rotate them in your hand.
所以当头,者在手晶体,具有多色性的晶体看上去在变换颜色。
Not all non-cubic gems are pleochroic, and even when they are, the color change isn't always noticeable to our eyes.
并不是所有非等轴晶系的宝石都具有多色性,并且即便它们具有这性质,它们颜色的改变也不定可见。
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