Our glass dome EXTERIOR SIZE: 9.75" wide by 10" high (+/- .1") INTERIOR SIZE: 9.5" wide by 9.75" high (+/- .1") This dome begins to arch at approximately 6". Base is approximately 12" in diameter and 0.75" thick. European hand blown glass. Perfect for displaying your Disney figurines, art glass pieces and other collectibles! (*Note - High quality, hand blown glass often contains small imperfections such as tiny bubbles, slight variation up to 1/4" - 1/2" in diameter size, etc. This is part of the character of hand blown glass and is germane to the process.)