Precious metals are defined mainly by their economic benefit and rarity. Although all noble metals are precious because of their resistance to corrosion and rarity, not all precious metals are considered noble. Rhodium is barely mined to be a by-item of platinum and palladium mining and is often a by-product, https://tysonunbsf.worldblogged.com/43698999/the-ultimate-guide-to-economic-indicators