Reliance Industries Ltd (RIL) enjoyed a year-on-year jump of 18.9 per cent in net profit for the three months ended June 30 this year, thanks to improved margins in refining business and strong growth in other income.

In a statement released on Friday, RIL said that its net profit jumped from Rs 4,503 crore during the April-June quarter of 2012 to Rs 5,352 crore in the same of 2013.

Gross refining margin jumped to $8.4 a barrel during the three months ended June 30, up from $7.6 a barrel during the corresponding period of the previous year.

Other income grew at an impressive annual rate of 33.14 per cent, from Rs 1,904 crore to Rs 2,535 crore.

Commenting on the results, K. R. Choksey Securities' managing director Deven Choksey said, "Given the kind of economic environment, RIL managed to post a growth in its net profit and also improve its margins."

Choksey added that the capacity addition in the company's petro chemical business would start reflecting its contribution in the company's results by the second half of the next financial year.

After the announcement of the quarterly results, RIL shares gained 0.67 per cent to close at Rs 923.15 apiece on Friday.