Visit places which include Bapu Bazaar for nearly all points to get at low-cost rates. For specialised purchasing, try to go to Johri Bazaar for gold ornaments and replicas, Tripolia Bazaar for sculptures and pottery, and Nehru Bazaar for attire. There are plenty of other popular Jaipur items to buy, https://www.gemsbiz.com/blog/explore/jaipur-heritage-wholesale-gemstone-market-of-india