Prehnite and epidote - Saint-Christophe-en-Oisans, Isère, France

This specimen combines light green, lustrous prehnite crystallized in a “helmet” shape with small epidote crystals—a mineralogical combination emblematic of Saint-Christophe-en-Oisans, in Isère. This specimen comes from a discovery made during the summer of 2023.

3.9 x 3 x 2.1 cm

Highlights of this specimen:

- Prestigious provenance from Saint-Christophe-en-Oisans, a leading locality for French Alpine minerals.
- An ideal specimen to complement a collection of French or Alpine minerals.

For your information:

Saint-Christophe-en-Oisans is one of the most renowned localities in French mineralogy. The alpine fractures in this area have yielded numerous sought-after mineral species, including remarkable associations of prehnite and epidote, as well as axinite and byssolite. These minerals formed in rock fractures, where hydrothermal fluids circulating deep underground facilitated their crystallization over millions of years. Discoveries remain relatively rare today and require extensive prospecting in the mountains. Specimens from this locality are prized by collectors for their aesthetic appeal and the prestige of their provenance.