These unusual, sparkling, lustrous garnet replacements after rhodochrosite seem to have formed as casts after large rhodochrosite crystals similar in form to the pseudo-triangular material we sometimes got from Mt St Hilaire in Canada. They could be after calcite or even siderite, some say, but the consensus seems to be that rhodochrosite was the original mineral. In any case, the original crystal underlying the garnet seems to have been completely replaced by several minute crystallization layers of the most sparkling, fine-grained garnet, with a deep maroon color. Small, elongated, jet black, shiny crystals of gaudefroyite decorate the casts, providing a welcome accent color. There really is not another mineral assemblage like this, and these are immediately recognizable when you see one in an old Kalahari collection. This specimen has a highly unusual shape to it, and is complete all around. Comes with custom lucite base. Photo and video by Joe Budd. A video which shows the glistening effect better than a flat photo can be seen at this link: https://vimeo.com/198296201 This piece was featured in the Mineralogical Record, January 2017 in the seminal article on the mine!