Hyalite opal - Ardes sur Couze, Puy-de-Dôme, France
Hyalite opal concentrated essentially on the upper crest of this vacuolar rock typical of the surroundings of Ardes sur Couze in the Puy-de-Dôme in Auvergne._x000D_ The aesthetics of this specimen takes all its meaning when it is subjected to short Uvs.
5 x 4,5 x 2,5 cm. Reference :1