• Calcite with Stilbite
  • Calcite with Stilbite

Calcite with Stilbite

$750.00   €711  £600.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC32323
Calcite with Stilbite from the iron mines around the city of Rudny in Kostanay Province, Kazakhstan.  Wow, what a beautiful specimen!  This is one of those specimens which sounds simple (which it is) and nothing out of the ordinary, but when you see it, extracts a fair few exclamations of “Wow!”.  Small yet perfect Roman sword Stilbite crystals cover the top surface of a creamy granular matrix and on top of these sit five pairs of perfectly formed twinned Calcite crystals.  The pairs range from 2 to 5 cm wide and all are semi-transparent to translucent, smoky opalescent light grey with a pearly lustre.  I must emphasise opalescent because the Calcite is a superb example of this optical property, displaying a slightly blue cast similar to moonstone; the colloquial name for pearly and opalescent microcline and orthoclase feldspar.  As mentioned, all crystals are twinned, with each perfectly displaying crisp re-entrant angles.  I can see no damage at all on the specimen.  It’s a beautiful and highly displayable example of Calcite with Stilbite from Rudny.


8.3 × 10.5 × 6.5 cm
Calcite, Silicates, Zeolites
Rudny, Kostanay Region, Kazakhstan

Minerals on Specimen

Minerals on specimen
Calcite, Stilbite

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