13 1/2" x 10". I was told it was Waterford
Thank you for the additional information and photos that you provided. Your vase, unfortunately, is not Waterford. Waterford doesn't do may piece with Brunswick stars nor do they use that type of cutting on the foot. With that being said, your vase is American Brilliant Period cut glass. It also appears to be in good condition and dates from the early 20th century. Based on recent price realization fair market value for your vase would be between 200 and 500 US dollars.