This stone measures 13.15mm X 11.11mm X 6.57mm. Paraíba tourmalines are famed for their electric neon blues and greens, caused by trace amounts of copper and manganese—an element combination almost never seen in other gems. First discovered in the late 1980s in Brazil’s Paraíba state, their vivid glow seems to radiate with its own inner light, earning them a reputation as some of the most mesmerizing and valuable tourmalines on Earth.