That's a fascinating object. Obviously a lot of work has gone into it. Having the holes meet in the middle must be intentional and could be to create a reservoir, or could be to thread something ? It seems quite small, so as a lamp it wouldn't last too long esp if it had multiple wicks ? It its "modern" it could be an ink well ?
It appears to have a flat base, and looks fairly deep for its width, so it I assume it will sit and be stable. The two sets of lines, around the top, forming rectangles seem to be purely decorative which suggests that the object is for personal use, perhaps indoors, rather that a hard working utilitarian object ? No one would go to that detail unless it was to be seen and appreciated for a long period of time.
I'm not familiar your (part of the world) indigenous materials, art and styling, but I'd suggest contacting a local historic group, archeologist or museum for a comment. Just send them the photo and see what they have to say.
I'd be fascinated to know if you ever get an explanation.
