A sculptural specimen of quartz var. amethyst spheres growing in an aesthetic cluster from Mamuju Regency, Indonesia. This is so called grape agate. Very attractive arrangement of amethyst spheres one atop another. They are very fresh and sparkle strongly. The color is a rich lavender. It is complete all over. For references see the 2018 issue of The Mineralogical Record vol. 49, # 6. In excellent condition. On acrylic base.

Fine grape agate!