钻石的折射率和色散是: A: 2.616/0.33 B: 2.417/0.044 C: 2.150/0.060 D: 1.925/0.038
钻石的折射率和色散是: A: 2.616/0.33 B: 2.417/0.044 C: 2.150/0.060 D: 1.925/0.038
堇青石 (Iolite)的折射率是() A: 1.675~1.701 (+0.029,-0.010) 点测为1.68 B: 2.616~2.903 C: 1.542~1.551 (+0.045,-0.011) D: 1.716~1.731 (±O.004)
堇青石 (Iolite)的折射率是() A: 1.675~1.701 (+0.029,-0.010) 点测为1.68 B: 2.616~2.903 C: 1.542~1.551 (+0.045,-0.011) D: 1.716~1.731 (±O.004)
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