Gemstones with RI 1.710

6 gemstones have a refractive index range that includes 1.710. Refractive index measures how much light bends when entering a gem — it's one of the most diagnostic properties for identification. Measured with a gemological refractometer.

← All RI Values

GemstoneRI RangeSG RangeCrystal SystemOptic Character
Rhodochrosite1.600 – 1.8203.40 – 3.70TrigonalDR_U-
Diaspore1.685 – 1.7523.30 – 3.39OrthorhombicDR_B+
Chrome Diopside1.664 – 1.7303.22 – 3.38MonoclinicDR_B-
Star Diopside1.664 – 1.7213.27 – 3.36MonoclinicDR_B-
Sinhalite1.665 – 1.7123.47 – 3.50OrthorhombicDR_B-
Malachite1.655 – 1.9093.60 – 4.05MonoclinicDR_B-
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