Twin crystals black Brazilian quartz
PUMI2593-2
This black quartz twin crystals, formed together in a Brazilian deposit, known for its unique deep-hued crystals. . This quartz, so dark it appears almost black, owes its color to a fascinating natural phenomenon: natural irradiation.
When aluminum impurities within the quartz are exposed to radioactive minerals such as uranium or thorium, often found in the surrounding granite, a gradual change in coloration occurs. The longer the exposure to radiation, the darker the quartz becomes. This phenomenon, observed in various regions around the world, is particularly prominent in Brazil.
A balanced piece.
When aluminum impurities within the quartz are exposed to radioactive minerals such as uranium or thorium, often found in the surrounding granite, a gradual change in coloration occurs. The longer the exposure to radiation, the darker the quartz becomes. This phenomenon, observed in various regions around the world, is particularly prominent in Brazil.
A balanced piece.
