This is a very impressive, display specimen of Ferberite from Bolivia. The piece features several sharp, lustrous, aesthetic, jet-black crystals measuring up to 2.0 cm forming a beautiful "flower"-like crystal group associated with a few gemmy Quartz crystals. These Bolivian Ferberites are often underrated and stand up well against any other Ferberites from China or Panasqueira. This piece was from the famous find in 1999 at Tasna.