Bullion is refined precious metal — most commonly gold or silver, also platinum and palladium — valued by its weight and purity rather than by rarity or collectibility. It is produced as coins, bars, and rounds. Bullion prices track the metal's market (spot) price plus a premium, which distinguishes bullion from numismatic coins, whose value depends chiefly on scarcity and condition.
Key takeaways
- Bullion’s value comes from metal content: weight × purity × market price, plus a premium.
- It comes in three main formats — sovereign coins, bars, and private-mint rounds.
- Purity is expressed in fineness: .999 (“three nines”) and .9999 are common for investment-grade products.
- Bullion is not the same as numismatic (collector) coinage, jewelry, or paper metal exposure such as ETFs.
- Owning bullion means physical custody — which brings storage, insurance, and resale considerations.
Definition, precisely
The word bullion refers to precious metal in a form whose market value is determined overwhelmingly by its metal content. A one-ounce .9999 fine gold coin from a sovereign mint and a one-ounce .9999 cast bar from a private refinery are both bullion: same metal, same weight, same purity — different premiums and recognizability.
Important distinctions
| Category | Value driven by | Key difference from bullion |
|---|---|---|
| Bullion | Metal weight and purity | — (the baseline) |
| Numismatic coins | Rarity, condition, collector demand | Can trade far above metal value; requires collector expertise |
| Jewelry | Craftsmanship, brand, metal | High markups; resale usually near metal value only |
| Metal ETFs & mining stocks | Financial-market exposure | No physical custody; different risks (counterparty, management) |
Formats at a glance
Coins are struck by sovereign mints (for example, the United States Mint or the Royal Canadian Mint), carry legal-tender status, and are typically the most recognizable format — usually at the highest premium. Bars are produced by refiners and mints in sizes from one gram to 100 ounces and beyond, generally at the lowest premium per ounce. Rounds are coin-shaped private-mint products with no legal-tender status, typically priced between the two. The full tradeoffs: coins vs. bars vs. rounds.
What owning bullion involves
Physical ownership means the metal is in your custody or a custodian’s. That is precisely its appeal for some buyers — no issuer, no counterparty for the asset itself — and precisely its burden: storage, insurance, shipping, authentication at resale, and dealer spreads all belong in your total-cost math. Prices can rise or fall; bullion is not risk-free. Read the risks →
Frequently asked questions
Is bullion a good investment?
That depends on individual goals, circumstances, risk tolerance, time horizon, and liquidity needs — which is why we don’t answer that question for you. Some people purchase bullion for diversification, tangible ownership, or long-term holding; prices can rise or fall, and it produces no income. This is general education, not individualized financial advice.
What purity counts as investment-grade bullion?
Common investment-grade fineness is .999 or .9999 for gold and silver, though some widely traded sovereign coins (such as 22-karat gold coins at .9167 fineness) contain a full troy ounce of gold with alloy added for durability. Purity and total metal content are separate specifications — check both.
Is bullion measured in regular ounces?
No — in troy ounces. One troy ounce is about 31.103 grams, roughly 10% heavier than the avoirdupois ounce used in everyday weights.
Sources & evidence notes
- Definitions consistent with published specifications from sovereign mints (e.g., the United States Mint and Royal Canadian Mint product specifications). Stable facts; reviewed annually.
- Troy ounce conversion: 1 troy oz = 31.1034768 g (standards bodies). Stable fact.
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