Looks like forged Titanium bonded as two halves of a fan blade. Certainly badly overstressed.
Considering the separated bits of the front of an engine in earlier pictures at the crash site, this piece was likely found at the crash site and due to the crash itself.
Anything else this small if departed at altitude, would just be well scattered flotsam and jetsam among all the war debris in that part of the country.
disclaimer: it's had to get interested in minute details if one accepts a missile strike as the cause.