This exquisite collection features six natural bi-color tourmalines, each a masterpiece of nature's artistry. Totaling 4.20 carats, these round cabochon-cut gemstones showcase stunning color contrasts characteristic of premium African tourmalines. Measuring 8-8.5mm, they're ideally sized for fine jewelry applications. Completely unheated and untreated, these stones represent authentic gemstone excellence with no enhancements. Perfect for collectors and designers seeking genuine, high-quality tourmalines with distinctive dual-tone coloration and exceptional clarity.