Assertion: zircon's index | /r/HasProperty | ri
Facets:
Source sentences:
text: Some, such as its high refractive index (RI) and dispersion, seem to have made it the “natural choice” for a diamond simulant, so to speak.
text: The refractive index (RI), measured using a refractometer, is an indication of the amount light rays are bent by a mineral.