If you only leave it in the freezer for about 20 minutes it just chills the water down very well. Doesn't get cold enough to harm the glass in the vase. If you left it there overnight you might have a problem. But, it would most likely only crack if you were, for some odd reason, heating the vase itself. Just coming from the freezer to room temp air shouldn't hurt it at all unless there is some kind of flaw in the vase to begin with. Smoke happy.
Originally Posted by ttdr
Th vase into the freezer is that a good idea ?
Glass cracks when it goes from cold to warm right ?