Topaz Colors - Red?

To the best of my knowledge, all green topaz is either VERY light
green or has some major treatment (radiation or diffusion).

What about red topaz? I have recently seen a vendor offering VERY red
topaz. While he or she did not mention that it had been treated, I
think it must have been.

Does anyone know about Red Topaz?

TOM (OWL1)

Red topaz is a beautiful color and is available in cabachon and facet
form. The faceted stones are very rare and expensive. It is
available naturally and without treating. We do carry the rosy color
in cabachons and have access to facet material.

Diane