Description

Exceptional prehnite crystal of very large size, nicely associated with green epidote rods on 1 mm of gangue.

Crystallizations in helmet for this magnificent prehnite of a beautiful opalescent green, with perfect edges.

Crystals of this size are really not usual.

Excellent specimen which comes to us from the famous deposit of prehnite of La Combe de La Selle in Saint-Christophe-en-Oisans, in Oisans, department of Isère. Mineral emblematic of the Oisans.

Here is a video of this prehnite crystal, mineralogy of the Oisans :

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