Pleochroism: distinct in strong colored gem varieties, kunzite is violet-purple/colorless and hiddenite is green to blue-green/colorless to pale green.
晶多样色性:不同类锂辉石具有明显强烈颜色,锂辉石具有罗兰色到色或者无色,希登石是绿色到蓝绿色或者无色到淡绿色;
Pleochroism: distinct in strong colored gem varieties, kunzite is violet-purple/colorless and hiddenite is green to blue-green/colorless to pale green.
晶多样色性:不同类锂辉石具有明显强烈颜色,锂辉石具有罗兰色到色或者无色,希登石是绿色到蓝绿色或者无色到淡绿色;
When cutting most pleochroic gemstones (Iolite, Tanzanite, Kunzite etc.), lapidaries typically try to minimize the pleochroism and maximize the single most prominent color.
在切割多数多向色性类宝石时(如堇青石、坦桑宝石、锂辉石),通常宝石匠会尽量缩小多向色性并最将某一主色凸显出来。
(3) the observations and determination methods of form, cleavage, Becke line, shagreen surface, relief, pseudo-absorption, absorption, color, pleochroism of minerals under plane polarized light;
⑶单偏光镜下矿物形态、解理、多色性、吸收性、糙面、突起、贝克线观察与测定方法;
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