georgetown pottery sponge holder - hamada & persimmon georgetown pottery a clever way to keep your kitchen sponges close at hand and off your counter or bottom of sink. no longer clean up the watery mess left behind and keep your sponges dry. georgetown pottery sponge holders are dishwasher safe for easy cleaning. each is handmade in maine from fine porcelain clay and decorated by hand. they measure approximately 4" in diameter and 3 1/2" tall. their generous opening accommodates standard kitchen sponges and scrubbies.