The gems and jewellery sector has been one of the fastest-growing sectors in India in the past few years. The sector has gained global popularity because of its talented craftsmen, its superior practices in cutting and polishing fine diamonds and precious stones, and its cost-efficiencies. India is also one of the largest diamond processor in the world and its artisans have specialised skills in processing small diamonds. India (especially, Surat and Mumbai) ranks among the 'big four' diamond cutting centres of the world - the other three being, Belgium (Antwerp), the US (New York) and Israel (Ramat Gan). Till 18th century, India was the only source from where this stone was exported world over. Then in 1726, Brazil came into the picture where huge reserves of diamond were discovered. These discoveries made Brazil the leading diamond producer of that time. Around 1870, huge reserves of diamond were discovered in South Africa & became the leading producer of diamond. This book comprises of five chapters; chapter 1- Introduction, chapter 2-Review of Literature, chapter 3-Consumer Buying Behaviour, chapter 4-Data Analysis and Interpretation, chapter 5-Recommendations, Conclusion