This is an antique American Brilliant Cut Glass vase. It is cut in triangles, diamonds, zippers, and stars. There is also a row of circles cut around the center of the vase. It is 7 3/4 tall with a sawtooth rim. It is in excellent condition with no chips or cracks.
The cutting is all quite sharp and clean. It is not marked or signed, I have not been able to identify the maker.