This is a Grape Agate specimen from Indonesia. Grape Agate, also known as botryoidal chalcedony, is comprised of microcrystalline amethysts that formed these Dip-n-Dot looking stones. This one has nice color all throughout as well formed nodules as well. There are some small nodules layered on top of the larger ones in certain sections, giving it a nice aesthetic.
This piece measures approximately 7.1 x 5.3 x 3.2cm and comes with a display card listing the mineral name and locale.