great citrine geode pair with fantastic color and large double-terminated calcites

A citrine geode pair from Brazil, weighing a total of 53.4 kg per half, with large double-terminated calcite crystals growing out of the honey-yellow inner wall. A three-phase mineralogy in one monumental piece.

Citrine forms in volcanic geodes of the Serra Geral basalt formation from silica-rich solutions. The honey-yellow coloration comes from traces of trivalent iron. Brazilian geodes are among the most productive citrine deposits worldwide.

Double-terminated calcites are calcite crystals that crystallized on both ends, growing freely in the original cavity phase without adhering to a wall. With a citrine geode as the background, this is a rare multi-generational constellation: citrine phase first, then carbonate phase with the calcite double-terminations.

78.5 cm height per half and 30 cm depth make the pair an architectural collector's item. The arrangement as a mirrored pair illustrates the original geode symmetry.

A collector's item with museum dimensions and multi-generational mineralogy.