Brazil’s exceptional aquamarines form in pegmatite deposits where beryllium-rich magma slowly cools within vast granite formations, allowing perfect crystal development. The unique geological conditions in Minas Gerais provide ideal temperatures, pressures, and mineral compositions for growing large, inclusion-free crystals with vibrant blue coloration. These ancient formations, undisturbed for millions of years, allow aquamarine crystals to develop to remarkable sizes with consistent color throughout. The specific balance of trace elements in Brazilian deposits—particularly iron in its precise oxidation states—creates the pure blue tones that make these stones globally renowned for their natural beauty and value.