Marvelous rare crystals of gemmy Carletonite from the famous Mont Saint-Hilaire, Quebec, Canada. The Carletonite is one of the very rare mineral species unique for the type locality of Mont Saint-Hilaire. Crystals are not often seen. The Carletonite has from rich royal blue to colorless. The crystals are glassy, lustrous and gemmy. Some contacts. On acrylic base.

Superb Carletonite!