I’m hopping on the Eldar origin, with it being a Vehicle/special model/terrain bandwagon. The inlaid spiritstone/gem is highly reminiscent of those found on the front of wave serpents and hornets. The only thing that confuses me is the actual structure and shape of it. It’s neither Aerodynamic to be the wing of a flyer, nor does it have any traits that truly stand out as fully Eldar.
Looking at other Eldar vehicles, it’s fairly obvious that this piece is one of the front bits of the hull of the vehicle where the flat end(left side in picture) is towards the center. While the outside, which is rounded is towards the outside. Other Eldar vehicles though, do not come to a point like this, their points are more semi-Circle instead of an actual point. The only Aeldari Vehicles with a point anything like that would be the Drukhari Venom or whatever form of the Vyper.
So, Eldar origins. Vehicle. A little more spikey than usual. Hovering, not pure flyer. Maybe Ynnari, maybe Harlequins. Seems similar to Venom/Vyper. Maybe a hybrid medium vehicle? Unable to tell beyond this