Lovely Wicker light shade.
Measurements 36cm width x 22cm height approximately.
Could potentially be used on a lamp base if a shade support is used. See pictures for something similar.
This shade may require a shade reducing ring either plastic or metal. This clips in the shade or sits in the ring depending on the ceiling fitting 
These can be purchased from ebay, major lighting shops or you may already have one from an existing shade that should clip out