0-hr
Starship Cartographer
It seems to me that a Shatter spell can be used to sunder a held, non-magical weapon, no matter what it is made out of. This make the spell really useful (IMO) - more so than those encounters with brittle or crystaline objects/creatures. Am I correct in thinking that the spell can be used as such. This 'secondary' ability is really obscured with all of the talk about crystal things, but below are the relavant bits of the spell descritption:
Shatter
Area or Target: one solid object
Saving Throw: Will negates (object)
Spell Resistance: Yes (object)
Shatter creates a loud, ringing noise that ... sunders a single solid, nonmagical object..
...you can target shatter against a single solid object, regardless of composition, weighing up to 10 pounds per caster level.