Kundan and Polki both are stones. Kundan jewellery uses gemstones and glass in its craft while, Polki involves using uncut, raw diamonds without any processing. Kundan is a traditional Rajasthani style of jewellery and is made of glass stone (glass polki). Meenakari is a colourful style of jewellery that flourished during the Mughal era, and was hugely popular with Rajasthan royalty.