Large amethyst fountain with illuminated rotating rock crystal sphere

A large amethyst fountain with an illuminated rotating rock crystal sphere on a purple geode base. A kinetic mineral sculpture in which water, stone, and light interact.

The amethyst base consists of a cut geode half, whose purple internal crystals form the fountain basin. The rock crystal sphere rotates on the water flow above the mineral basin, a curatorial staging connection of both quartz varieties.

Such fountain sculptures are classified as fountain pieces in the collector's trade. They demand engineering precision: the water dosage must be exact so that the sphere rotates continuously without bouncing.

The internal lighting expands the staging: the light shines through the rock crystal sphere and reflects on the purple geode wall, creating atmospheric lighting.

A collector's item from the intersection of mineralogy, hydraulics, and light staging.