Great amethyst geode with a special shape and colorful agate rim in a metal stand

A Brazilian amethyst geode with a special shape and a colorful agate rim, presented in a metal stand. The irregular geode geometry and the colorful banded outer edge make the piece a unique visual composition.

The colorful agate rim documents changing trace element concentrations during the early mineralization phase. Iron oxides color it red-orange, manganese traces gray-black, and the quartz background is white.

Amethyst then crystallizes in the geode's interior from an iron-containing solution. Brazilian deposits in Rio Grande do Sul supply geodes of this "Bandung" quality.

The metal stand fixes the piece in an optimal viewing position and highlights the contrast of the agate rim.

A Brazilian collector's item with documented "Bandung" genesis, unusual geode shape, and curatorial presentation.