I had my eye on that stone for a week or two, and had the same thoughts as you, but couldn't bring myself to pull the trigger. That end view looked to me looked a little quartzy-ish, and un-coticule like. But -- the price was good even if it turned out to be an Ark. At any rate, it should be an interesting buy, and I'd love to hear how it turns out and I'd like to see better pictures of the stone I let get away.