This is a beautiful grape agate specimen that has some nice purple colors, “grapes” on all sides and a really great size for display - 404g. See pix for more detail!
Grape agate is a marketing name for purple quartz crystals that have a round shape, purple color and a cluster that resembles grapes. Geologically speaking, these are not really agates, but instead more likely amethyst, or even more accurate - "botryodial" (round) amethyst.
Please look closely at the photos and video - they show the specimen in various angles so you can get a good view of how the piece looks.