So Frostburn list Blue Ice as an Exotic material. It weighs half as much as iron and can be forged, shaped and utilized as if it were iron. ( Very useful to keep your beer cold!)
When forged into a slashing weapon it has a +1 enhancement bonus on damage.
If I were to crate a masterwork blue ice long sword, would it be the same as +1 blue ice long sword? (Minus it being magical) +1 to touch and +1 to damage?
Does this enhancement stack if the weapon were to be magical, say a +2 blue ice long sword. Giving a +2 to touch and +3 to damage?
(Please add reference, preferably rulebooks)