Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.

Dhulark's Glasstrike

(Magic of Faerun)

Level: Sorcerer 6, Wizard 6,
Components: V, S, AF,
Casting Time: 1 action
Range: 60 ft.
Target: One creature or 4 cubic ft. of material
Duration: 1 hour/level
Saving Throw: Fortitude negates
Spell Resistance: Yes

You transform the target into glass.
You can cast either of these two versions: Glass Creature: As flesh to stone, but the target becomes glass.
Glass Object: An object of up to 4 cubic feet in volume is affected.
Part of a larger object (such as a floor or wall) can be transformed by this spell.
Neither version of the spell affects magic items (magic items carried by a transformed creature remain intact).
When the duration ends, the target returns to its original materials.
If the target was broken or damaged while in glass form, its normal form has similar damage.
Focus: A piece of glass from a mirror.