Glass to sand

This Magical shield turns any glass that passes through it into sand. It has a bluish appearance, almost like water, that surrounds half of the caster.

Known uses

 * In 1996, Albus Dumbledore conjured this type of shield to protect himself and Harry Potter from the shards of glass Lord Voldemort magically directed at them.

Behind the scenes

 * This spell only appears in the film adaptation of the Duel in the Ministry Atrium.
 * As glass is made principally from sand to begin with, the actual purpose of this spell may be more along the lines of disintegration, or transfiguration into a simpler state, rather than specifically glass-to-sand.
 * the sand is going at a speed that would rip flesh off of bone like a sand blaster

Appearances

 * Harry Potter and the Order of the Phoenix (film)