Ferberite with QuartzA VERY rarely seen doubly terminated Ferberite twin from Tasna. This specimen is an impressive, fairly sharp, semi lustrous DOUBLY TERMINATED twin which is only seen in a very small percentage of pieces from Tasna. A few small gem Quartz crystals on the side of the piece make for a great accent to this already eye catching little specimen. The back of the twin has a rub which keeps it from being completely perfect, but its more than forgivable

Specimen # BOL711B70

when Huanuni produced some really attractive Vivianite specimens

metallic silvery color

Specimen # BOL711B289

multi-twinned group that is DOUBLY TERMINATED

and it resided in his collection until he passed in 2025

aesthetics and displayability are secondary only to the superb quality of the Barite crystals themselves

so both ends had room to finish growing

This twin is a great example of the material as it shows a fairly “open” twin

and it's because of the tremendous gemminess which allows one to clearly view them whether they're on the surface or directly in the center

most often as blades

and the top specimens from this area in Bolivia are among the best around