4 Carat Iolite (Neeli)

4 carat Iolite, also called cordierite, is a violet blue gemstone known for its good durability, ranking around 7 to 7.5 on Mohs hardness scale. High-quality stones usually range between $400 to $2,000 USD, while lower-quality pieces are available at more affordable prices. In India, where it is commonly used for astrological purposes and known as “Neeli ratna” 4 carat stone can cost anywhere from ₹3,000 to ₹10,000 or more, depending on its color, clarity, and overall quality.