Attractive royal blue to lighter blue Azurite ball. Featuring Azurite clusters of nice aggregates with extremely intense dark blue color. They grow on blue colored core. At the center are seen irregular cavernous formations with crystallized Azurite. Displays nicely from all sides. For references see the issue of The Mineralogical Record vol. 45, # 4, July-August 2014. Some imperfections.

Cool!