Ferberite (twin) / Locality - Tasna Mine, Potosi Department, Bolivia

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A 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 have to 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 good example of this material as it shows a fairly “open” twin, with aesthetic form. Along with the fairly sharp faces and matte luster, it’s a worthwhile representation of these classic specimens. The piece is contacted on the bottom, but still displays well as you can see from the photos.

Locality: Tasna Mine, Rosario section of Cerro Tasna, Atocha-Quechisla District, Nor Chichas Province, Potosi Department, Bolivia

Specimen Size: 2.9 x 2.6 x 1.2 cm (thumbnail)

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Processing time

1-3 business days

Estimated shipping times

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  • Australia, New Zealand and Oceania : 10 - 20 business days
  • Asia Pacific : 7 - 14 business days

I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.

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I gladly accept returns, exchanges, and cancellations

Just contact me within: 14 days of delivery

Ship items back to me within: 30 days of delivery

Request a cancellation within: 2 days of purchase

But please contact me if you have any problems with your order.

The following items can't be returned or exchanged

Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:

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Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.

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