Bertrandite (superb quality) with Tourmaline / Locality - Golconda Mine, Governador Valadares, Minas Gerais, Brazil


Shipping to United States: Free

Betrandite is a fairly rare beryllium silicate, and crystals are typically small worldwide, usually less than 1 cm. These new specimens from Golconda feature crystals measuring OVER 3 cm(!) which is world-class for the species. Not only are these monstrous crystals, but the quality is as good as it gets showing a glossy vitreous luster and a gorgeous porcelain-white hue. This particular piece features an aesethetic group of top quality, layered groups of fine quality, highly lustrous, Bertrandite, the largest is DOUBLY-TERMINATED and measures 3.3 cm To top it off, and associated dark blue-black colored "cat's eye" Tourmaline crystal is seen on the specimen, and if that wasn't enough, one end of the crystal shows a rare beautiful fibrous termination! It's a tremendous rarity to find specimens of Bertrandite like this with such large fine quality crystals, let alone with a Tourmaline crystal sitting right in the middle. The light greenish-yellow mineral appears to be Muscovite. From a new find at the end of 2016, these specimens are arguably the finest examples of the species extant. Back in the late 1980s or early 1990s (according to various sources) there was a discovery at the Golconda Mine that produced some extraordinary Bertrandites. These specimens were quickly forgotten, and only a few of them are seen on the market coming out of old collections. Fortunately a second (but also very limited) discovery was made at the end of 2016, and a handful more of these outstanding Bertrandites showed up at Tucson. We were lucky to have first pick from a parcel that belonged to a good friend, and we were blown away by both the size and quality of these crystals. A great miniature specimen for anybody who collects pegmatite minerals, Brazilian minerals or just top quality minerals specimens.

Locality: Golconda Mine, Governador Valadares, Minas Gerais, Brazil

Specimen Size: 3.7 x 3.5 x 2.5 cm (miniature)
Largest Crystal: 3.3 cm.

Shipping from United States

Processing time

1-3 business days

Estimated shipping times

  • North America : 2 - 5 business days
  • Europe : 7 - 14 business days
  • 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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Just contact me within: 14 days of delivery

Ship items back to me within: 30 days of delivery

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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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