Are there any precious metals other than gold and silver that are measured by them, and does riba (usury or interest) apply to them?

Question : Gold dust; there is no division of some precious items.

Answer : No. The Germans. According to the stronger position, they are not measured by them. As for the one who holds that there is riba in iron, copper, brass, and lead, this is clear: all metals do not [have riba], because the operative cause is monetary value, since these are the people's currency. Yes, 'Abd al-Wahhab.