This substantial collection comprises 81 pieces of natural bi-color tourmaline, delivering 74.65 carats of unenhanced gemstone material from Africa's finest sources. Each stone is expertly fashioned into a 7x5mm oval cabochon, presenting consistent dimensions ideal for cohesive jewelry compositions. Completely untreated and unheated, these gems preserve their authentic character with remarkable clarity and the distinctive dual-tone coloration that defines premium bi-color tourmaline. A distinguished offering for accomplished jewelers and passionate collectors seeking generous quantities of genuine, high-quality stones for ambitious creative projects and curated gemstone portfolios.