Ferberite amber There were very few crystals

There were very few crystals from the entire find on matrix

This is not only a first-time find for Hopeite from Bolivia

medium blue-green colored Amazonite crystals with no matrix

It's not completely unstable like decomposing Limonite and it provides a much more appealing contrast than ordinary Pyrite

so I decided to take out this beauty and put it up for sale

Ferberite amber There were very few crystalsA classic V shaped twin (twinned along the {100} face) of Ferberite from the famous Tasna mine in far southern Bolivia. This locality has produced what must be the finest twinned Ferberite crystals extant. Ferberite, as a species, is not known in well crystallized examples worldwide, and the twins from Tasna are a favorite among collectors. This twin is a great example of the material as it shows a fairly open twin, with aesthetic form. Along with the