This Specimen has been sold.
10.7" Wide Prasiolite (Green Quartz) Geode With "Stalactite" - Uruguay
This is a truly stunning specimen of druzy quartz from the amethyst mines near Artigas, Uruguay. It was mined from within a pocket in basalt and features "stalactites" with a secondary growth of sparkling green, yellow, and brown quartz crystals. I can pretty much guarantee this incredible piece will look better in person than in the photos. Overall, an exceptionally unusual and beautiful specimen.
Prasiolite is a green variety of quartz that only naturally occurs in a few locations. It is formed when amethyst bearing rocks are heated by nearby lava flows or intrusions. It's often marketed under the name, green amethyst though that is technically incorrect as by definition amethyst is purple in color.