Harmony Gold Mining's stock plunged 6.25% in pre-market trading, reflecting a broad sell-off in gold and precious metals mining stocks.

The decline comes as gold prices fell to a more-than-one-month low, weighed down by a firm U.S. dollar and a hawkish Federal Reserve stance that has limited hopes for near-term interest rate cuts. A stronger dollar makes dollar-priced bullion more expensive for holders of other currencies, reducing demand.

Spot gold has fallen more than 9% since late February, pressured by the dollar's strength as it emerged as a preferred safe-haven asset amid geopolitical tensions, further dampening investor sentiment toward gold-related equities.