Gold in the national capital on Thursday plunged Rs 491 to Rs 45,735 per 10 gram amid a decline in international precious metal prices and rupee appreciation, according to HDFC Securities.

In the previous trade, the precious metal had settled at Rs 46,226 per 10 grams.

Silver also tumbled Rs 724 to Rs 61,541 per kilogram from Rs 62,265 per kilogram in the previous trade.

The Indian rupee inched higher by 5 paise to 73.45 against the US dollar in opening trade on Thursday.

In the international market, gold was trading lower at $1,786 per ounce and silver was flat at $23.60 per ounce.

"Gold prices traded weak falling below $1,790 per ounce with a rally in US bond yields," according to HDFC Securities Senior Analyst (Commodities), Tapan Patel.