I was hoping an art expert would comment before I threw in my .02, but here it goes...
Looks to be more of a stylized religous/choir robe. Looks to be Art Deco style to me.
I am interested in the internal structure of the piece. How heavy is it? It appears to be in the 15lb-20lb range if it is solid. Is the stone polished marble?
Are the stubs coming out the "arms" made of copper/bronze? If it is light, around the 5lb-10lb range there may be an internal metal skeleton and the stone is thin cut pieces of inlay.
The problem I see with it is the composition of the piece in general. It appears to be missing something. Stylized head and hands? Maybe it went with a set of other like type sculptures?
Any maker marks, signatures? Without more info would be hard to value.
A piece like that might bring $500-$1000 at an upscale art gallery in a major city, or no more then $10 at the flea market
![Huh? ???](https://onlinestorageauctions.com/forum/Smileys/fantasticsmileys/huh.gif)
, which is probably why you have it in your possession now.
Good Luck!