Iolite, also known as the ‘Neeli’ gemstone, Iolite is a beautiful violet-blue stone. Iolite ( Neeli or Kakaneeli ) semi-precious gemstone. Iolite (Neeli or Kakaneeli in Hindi) is a violet-blue colored, semi-precious gemstone, Iolite meaning Shani Priya or Neeli stone in Hindi is associated with the planet Saturn. Neeli stone has translucent to transparent transparency.