This is a very large piece and it weighs 8 pounds. It is 10" tall and 8" at the widest point. Its thick and completely cut. It is black amethyst but its lighter near the bottom.
I believe it has to be Moser or one of the Bohemian companies. I have had several small pieces but never anything close to this size. The pictures do nothing for it. Each cut works the light different. This piece would commands attention in any room.
I believe it is from the 20's like the Adolf Beckert bowl I also have listed. This is a rare piece in pristine condition. The item "Large Moser Bohemian Art Glass Mirror Black Amethyst Cut Glass Vase" is in sale since Friday, August 3, 2012. This item is in the category "Pottery & Glass\Glass\Art Glass\Bohemian/Czech\Other Bohemian/Czech Art Glass". The seller is "joescout1" and is located in Chaplin, Connecticut. This item can be shipped worldwide.