Collectors Minerals Very Very Rare Vorobyevite (Rosterite) Cabs From Afghan

Item Information

Dimensions (mm) 12 x 9 x 4mm
Weight (carats) 3.7 carats
No Treatment

Collectors Minerals Very Very Rare Vorobyevite (Rosterite) Cabs From Afghanistan Beryl (Var: Alkali-beryl) : Be3Al2(Si6O18),

Origin : Afghanistan

Color : Seen In Pictures

Cut : Cabsicon

Shipment will be ships within 3 business days after receiving payment.

Vorobyevite (sometimes called Rosterite) is a rare variety of Beryl that does not qualify as its own species. The name was applied to both colourless cesium-bearing beryls from the Urals and rose-coloured and colourless alkali-rich beryls from Madagascar, all of which showed sharp hexagonal crystals which are shortened on the c-axis. This new find had a similar morphology, which led to puzzlement over what it was. Although the morphology of these crystals is clearly unusual (see photos), and although the crystal habit of these strange beryls is similar to Pezzotaite (which is a valid species of beryl), these do not contain enough cesium OR OTHER ALKALI to be classified a new species under current mineralogical rules. To be sure of the classification of this unusual material, when the pocket was found, we sent the whole lot to the lab of Dr. Federico Pezzotta in Milan. He performed analyses on multiple specimens to show that one can consider these to be ALKALI-rich, EVEN IF NOT PARTICULARLY CESIUM RICH COMPARED TO OTHER EXAMPLES, and he believes this is the reason for the crystal habit we see here (bowed-in centers; sandwich-like look on the edge faces with color zoning; and unusual sharply tabular morphology). I was able to buy nearly the entire pocket of this material, which I was told was mined in mid-2012 in the summer season. The altitude is a problem - it is difficult to access and the mining season here is only 3 months. No more were found in 2014 to date, despite an attempt. While we were initially told the specimens were from Gilgit, we now have better confirmation that the locality is Deo Darrah, Khash & Kuran Wa Munjan District, Badakhshan Prov., Afghanistan.

May 13, 2015 - NOTES: After further consultation with Dr. Pezzotta, he confirms that because of the unusual crystal shape (perhaps constrained by heavy alkali element presence) and the high alkali element representation here, that he believes these are indeed sufficiently non-mainstream beryl to classify as the varietal “Vorobyevite.” However, they contain very little if any cesium, as initially reported.


Shipment will be ships within 3 business days after receiving payment.

Shipping Policy

For Shipping Please provide us with complete and accurate / valid mailing address and contact number (Land line / Mobile). Please avoid P.O BOX Address.

Return Policy.

Please do no leave negative or neutral feedback. If there anything that needs to be fixed please let us know.

We well try our best to meet your needs

If For Any Reason You Are not 100% Fully Satisfied With Purchase You May Return Your Item With In 15 Days After You Have Received if For Refund Shipping Cost are Non Refundable

Questions Are Welcomed.

Color may not appear exactly as in real life due to variation between computers monitor resolution and lights.

The buyer is full responsible for any import customs duties and Taxes in his country.

We do not have any control over these. Duties, taxes & etc.


Give us 5 stars *****.

If For any Reason you are Unhappy Or Not Satisfied With Item You Received Please Contact US prior to leaving Negative FEEDBACK. We Always Resolve Any Issues Our Customer May Have.

Our Aim is to make a strong Relationship With Our Customer And Develop A Healthy Business.

$100.00 USD

Add to Cart Make an Offer
Shipping $15.00
21 Days via Registered Shipping
Add to Watch List Ask a Question * All prices in USD

Audit Information

The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Pricing & Details

Auction ID 690107
Watchers 9 watching
Viewed 3,985 times
Starts 25th Aug 2017 6:55am PDT

Shipping & Insurance

Provider Shipping Transit
Express Shipping $50.00 7 days
Registered Shipping $15.00 21 days
Shipping Insurance all providers $15.00 (optional)

Goldengem Details

You May Also Like