The metaphysical community rarely discusses the mundane burden of physical maintenance. A large Pink Amethyst geode resting on a display stand looks spectacular on day one. By day thirty, it is a dust trap. The countless microscopic crevices between the crystal terminations are magnets for household particulate matter, pet dander, and airborne oils.
You cannot simply wipe a geode with a microfiber cloth; the cloth will snag, tear, and leave lint trapped in the crystals. You cannot plunge it into soapy water or a saltwater bath. Many geode matrices contain secondary minerals or soft clays that are highly water-soluble. Submerging them can cause the host rock to turn to mud, literally dropping the crystal points out of the matrix. Furthermore, water trapped deep in the crevices promotes bacterial growth and mold, completely ruining the aesthetic and the "vibe" of the piece.
The veteran approach to maintenance is entirely dry and mechanical. You must invest in a high-quality, soft-bristled drafting brush (like those used by architects) and a canister of compressed air. Maintenance requires taking the specimen outside, gently brushing the heavy particulates, and using short, controlled bursts of air to clear the deep cavities. This is tedious, time-consuming work. Furthermore, both Rose Quartz and Pink Amethyst are susceptible to photo-induced fading. Leaving them exposed to direct, prolonged UV radiation from a sunny window will bleach the delicate pink color centers over a few years, turning your prized specimen a dull gray. If you cannot commit to placing them in indirect light and performing meticulous dry cleaning, stick to smooth, polished tumbled stones.