Glassteel

The glassteel spell turns crystal or glass into a transparent substance which has the tensile strength and unbreakability of actual steel. 

Only a relatively small volume of material can be affected, a maximum weight of 10 pounds per level of experience of the spell caster, and it must form one whole object. 

The material components of this spell are a small piece of glass and a small piece of steel.

The armor class of this substance is 1.