Natural 5.5 carat tourmalines combine substantial size with relative rarity, creating excellent investment potential as demand for large, fine colored stones continues to grow. These conflict-free precious stones have shown steady price appreciation of 5-9% annually over the past decade. The value of high-quality specimens is bolstered by diminishing supply from traditional mining regions, while global collector interest continues to expand – particularly for rare color varieties like chrome tourmaline or pure blue indicolite.