Please stat this item for me: Ring of Rust

[dreaded_beast]

This rusty iron ring is able to absorb any form of rust attack, similar to a "gauntlet of rust". There is a lesser version and greater version. The lesser version can absorb 3 rust attacks before crumbling into rust and becoming useless. The greater version can absorb 3 rust attacks per day and is in no danger from crumbling into rust from rust attacks.

Lesser: ?
Greater: ?

Too powerful, too weak?

 

[UltimaGabe]

They'd both be very inexpensive- considering that a Gauntlet of Rust permanently makes the wearer immune to rust attacks, AND it has the added effect of being able to make a Rusting Grasp 1/day.