Beautiful amethyst geode with a great agate eye

An amethyst geode in an almost round, spherical shape, presented on a delicate metal stand. A compact spherical geode with a dense purple crystal interior wall and a prominent agate eye on the right edge.

What makes this piece special is the distinct agate eye on the right edge. Concentric layers of chalcedony, like a painted eye, tell the story of the geode wall's mineralization sequence.

Amethyst belongs to the quartz family and crystallizes in the volcanic gas cavities of Brazilian lava flows. The violet coloration is caused by tiny traces of iron in the crystal lattice, which are stimulated into color centers under natural radiation.

Agate eyes form when a pulsating layer of silica-containing solutions is deposited on the geode wall before amethyst growth. Only then does the actual amethyst growth begin inwards. Both phases are clearly visible here.

The coloration of the tips is uniformly deep violet, an indication of slow, undisturbed crystallization.

A collector's item that offers an additional didactic layer due to the agate eye. The history of the geode wall is concentrated in a single piece.