[NYer]

Spilling seems to be a more serious concern than does breakage. The chalice would break if it were dropped. But that wouldn't matter given that spillage would occur. Metal, if dropped, will also spill.

You make an excellent point!! Thanks for posting it.

[saradippity]

I think it was Thomas More in an earlier post,said that he was around when a glass vessel shattered,and the Precious Blood spilled. Disposing of the Blood mixed with glass shards according to protocol was impossible. So it seems to me that it would be wrong to use glass.