Harold Baize wrote:
> 
> Right. My comment would be that I've never seen quarts that clear.
> What is the IOR?

IOR 1.55.

I have a rather nice piece of quartz that I did some testing/eyeballing
with and it really is that glassy. Of course, the quartz in the
rendering is also an unusually perfect specimen; most quartz seems to be
hazier, or cracked, or broken off at the point end, or with little air
bubbles, or what have you.

-Xplo

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