Dubai:In UAE, 24k fell Dh3 and opened at Dh361.75 per gram against Dh364.75 when markets closed on Monday. The 22K variant was selling at Dh335 per gram. Among the other variants, 21K and 18K opened at Dh321 and Dh275.25 per gram, respectively.US President Donald Trump ramped up tariff threats against China on Monday, while the European Union outlined plans for retaliatory duties, deepening fears of a drawn-out trade war that could tip the global economy into recession.