What a beautiful and unusual statement piece!  This two-piece glass hurricane serves a dual purpose: protection against wind, or separated for an open-air approach for a pillar or votive candle.
 
Combined Size:  12"h x 7"w x 2.25" opening
Small Lower:  4"w opening x 4.75"h x 5" dia base
Large Upper: 7.25"h x 7" w base x 7"h