I have seen quartz very close to being this perfect myself in a lapaderist
(sp?) shop.  for a 1 inch by .5 inch by .5 inch specimen costs like 2-3
hundred US dollars due to the rarity of such fine specimens....  usually one
ounce per 5 tons of quartz for something this pure


Xplo Eristotle wrote:

> 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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