What is 9K gold?       
Gold of 9 karats or 9K gold, which was recently approved for hallmarking in India, contains 37.5% pure gold blended with 62.5% alloys such as copper, silver, or zinc. Paler than higher karats, it is cheaper, harder, and more durable. The variant priced around ₹3,700 per gram or ₹37,000 per 10 grams currently.