One of the rarest of agates, set in sterling silver, with a cherub to watch over it - and you!In central Oregon, where Agates abound, one of the rarest was a plume Agate found on Powell Butte many decades ago. It was a minimal deposit, quickly depleted. This is one of the finest Powell Butte Plume Agate's I have ever seen in my lifetime of collecting rare and unusual stones. I set this into a beautiful Sterling Silver frame and it is watched over by a cherub.