Black Quartz cluster from Brazil (1.8 kg)

This black quartz specimen, weighing 1.8 kg, originates from the renowned crystal deposits of Brazil, celebrated for their unique formations. With a shade so dark it appears almost black, this piece owes its coloration to a fascinating natural phenomenon: natural irradiation. When quartz containing aluminum impurities is exposed to radioactive minerals, such as uranium or thorium, a gradual transformation in color occurs. This geological peculiarity is especially prominent in Brazil, thanks to its unique local conditions.
This group of crystals features a subtly faceted surface, where the crystals do not rise in tall tips but instead create a compact and uniform texture. Each facet captures light, revealing subtle and profound reflections.
Straddling wonder and curiosity, all that remains is to find the perfect spot to display this unique piece.