The order is to be completed by September 30 this year, Rajesh Exports said in a regulatory filing.
Its order book position as on March 31 this year was Rs 34,560 crore, it added.
"Rajesh Exports has bagged an export order worth Rs 653 crore of designer range of gold and diamond studded jewellery and medallions from Singapore," the jewellery firm said.
The order will be executed at the company's manufacturing facility at Bangalore, which has an installed capacity to process 250 tonnes of jewellery per annum.
The company has also presence in the retail segments and has 80 showrooms which sell its jewellery products under the brand name Shubh Jewellers.