Ferberite (doubly-terminated twin)

Item Description

This piece came from the great find of Ferberite twins of 2003. It is a rather large and impressive twinned crystal. This species was sometimes previously referred to as "Wolframite", which was supposed to be an intermediary species between Ferberite and Hubnerite, but has since been discredited. This attractive specimen features the classic, "butterfly" twinning of Ferberite along the a (100) face. It is a good quailty, sharp, lustrous, aesthetic, rarely seend DOUBLY-TERMINATED, jet-black twinned crystal. It has an attractive "open" or "butterfly" form and the twin itself is in great shape on the front and back save a few pocket contacts. Specimens like this are rare from any locality, including Tasna. Twinned Ferberite crystals from Bolivia are becoming increasingly difficult to obtain in recent years as the price of Tungsten ore has driven the miners to throw nearly all the Ferberite into the crusher, causing thousands of specimens to be lost forever. These twins are definitely the most highly sought after crystal habit from this locality. The specimen was valued at $1650 in the inventory. This piece is one of the better formed Ferberite twins that I have offered in a while.