Stilbite

$750.00

$40.00 shipping
Seller offers an extended return window of up to 30 days
Ships from USA

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.