Diamond - Heera - Astrologer Sunil Kumar How to wear Diamond - Heera Stone. Guys today I am going to tell you about a process in which you will know, how to wear Diamond ( Heera ) gemstone ring with correct astrological process. If you want to wear a Diamond Gemstone, you can wear a 0.5 to 1 carat Diamond. Diamond should have white color and less black spots in side.