Wootz? Or not?

I recently purchased a dagger (Khanjar) from India. It did not come with a sheath. The blade has a fairly uniform grey patina and a few rust pits here and there, but is basically sound. The hilt is carved from lapis lazuli, which is what really attracted me to it (it is one of my favorite gemstones). I am fairly sure it is an antique, as (1) it is still fairly sharp, while all replicas I have seen out of India (except ones that came through a reseller with a sharpening service) have had a 1mm+ edge flat on them, and (2) the grip is somewhat small for my average sized American hand, which is typical of almost all Indian antique swords and daggers I have handled (replicas made for westerners tend to be sized for westerners).

It was sold as being a Wootz blade. I can see some faint striations that might be the remnants of an etched Wootz pattern, or might be scratches in the blade. Is there any way I can test it to find out? I didn't pay a whole lot for it - under $100, in fact - but I have gotten a few good deals on honestly antique Indian weapons before (a couple of tulwars and a katar), so price isn't necessarily an indicator of not being genuine.