Karastan is a brand, not a design. I think it's a Sarouk pattern vs a Persian vs an Oriental vs a Tabriz, but I'm far from an expert. Here's a link that may help.

Here is a link that might be useful: link

Looks like it is Karastan Sarouk Pattern #785. There is a 9 x 12 of this rug on sale on ebay for $999 right now.

Here is a link that might be useful: Karastan rug

I think Nancy is right! Run, don't walk if you like that rug for $100 (unless it smells).

Thanks! I emailed and texted and am waiting (on pins and needles!) to hear back... It's actually about an hour and a half away, but I need to head that direction in the next couple of days to pick up something else, so I'm REALLY hoping I hear back! It will be absolutely perfect for our library/home office.

Just saw your post and wondered if you got the rug? If it is a Karastan, it should have a label on the back. I am sitting here looking at my Karastan red Sarouk and it doesn't look like the one in your picture, although it is similar. If you like it that is what matters for the price they were asking.