Beautiful specimen of sparkling Natrolite crystals with Aegirine from the famous Mont Saint-Hilaire, Quebec, Canada. The Natrolite crystals are elongated, prismatic and well terminated. They are colorless and lustrous. Well isolated black Aegirine crystals grow among them. It displays sculpturally all over 360 degree. For references see the 1990 issue of The Mineralogical Record vol. 21, # 4. In good condition – some small damages.

Superb!