Diamond an inorganic allotrope of carbon with the carbon atoms arranged in cubic crystal structure. It was formed within the ground 1-3.5 billion years ago at depths of about 150-200km. Host rocks containing diamonds include peridotite and eclogite. Diamonds were first mined in India about 6000 years ago and treasured as gemstones for religious practices. In the pure form, diamond is colorless and a poor conductor of electricity. It is the hardest natural material with the highest thermal conductivity, properties that are used for diamond testing. The hardness of diamond on the Mohs scale is 10, making it suitable for industrial applications such as cutting and polishing tools. Due to the hardness and robustness it is aptly said, “Diamonds are Forever”! Blue, yellow, brown, green, purple, pink, orange and red diamond are formed naturally due to presence of trace impurities such as boron and nitrogen and exposure to radiation or defects in crystal structure. Diamond also has a very high refractive index and a relatively high optical dispersion. The rarity of diamonds make them valuable and costly. An important characteristic of gem grade diamond is the dispersion of white light into spectral colors. Diamond represents the planet Venus and is believed to promote love, beauty, wealth, and artistic expression. It enhances charm and increases confidence.