Question

why does diamond have high refractive index?​

Answer 1

Answer:

Explanation:

It sparkles a lot because it has a high refractive index , so that the light entering the structure of the diamant is totally internally reflected many times, so that many light rays are leaving the diamond in all directions. ... Diamond has a very high refractive index: 2.4 (air has 1).

Answer 2

Answer:

The beauty of diamonds comes mainly for its sparkling. It sparkles a lot because it has a high refractive index , so that the light entering the structure of the diamant is totally internally reflected many times, so that many light rays are leaving the diamond in all directions