To form brazilianite crystals on an albite matrix, a multi-stage process occurs deep inside the Earth. It starts with a unique, extremely hot magma body called a pegmatite, where the albite grows first.
Afterwards, the magma continues to cool and change. Hydrothermal fluids travel through the now-solidified albite. These fluids are also rich in a special mix of elements, especially aluminum, sodium, and phosphate. For brazilianite to form, it requires a chemical change called metasomatism.
Through a series of chemical reactions, the old phosphate mineral is broken down and the new brazilianite crystals begin to grow. These gemmy, yellow-green crystals form directly on the surface of the already-formed albite matrix.
