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Tue 17 Mar, 2020 04:48 pm
If a stones refractive index is 1.76, is it undeniably a ruby?
@Darnet,
Darnet wrote:
If a stones refractive index is 1.76, is it undeniably a ruby?
I am not a geologist (Farmerman would be able to answer this definitively I think). But I am pretty sure that the answer is no.
Different materials can have the same refractive index. I don't believe this is definitive.