▲ Bourse minéraux et fossiles de Sainte Marie aux Mines (Alsace) - 24>28 juin 2026 ▲

Principaux sujets de Géoforum.

Bourse minéraux Sainte Marie aux Mines 2026, avec fossiles et gemmes.

Détail des stries à la surface des cristaux

On voit très clairement sur la photo, les stries à la surface des cristaux naturellement coupés.

From the album:

· 24 images

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