Optic Character

Gem Identification

Definition

The fundamental optical classification of a gemstone as either isotropic (singly refractive) or anisotropic (doubly refractive), and if anisotropic, whether it is uniaxial or biaxial.

Detailed Explanation

宝石的基本光学分类，即各向同性（单折射）或各向异性（双折射），若为各向异性则进一步区分为单轴晶或双轴晶。

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