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Gold (GC=F) has been a store of value for thousands of years, and it remains one of the most unique alternative assets in the world today. For investors looking to diversify beyond stocks and bonds, gold is a popular choice. But it also comes with trade-offs worth understanding before you buy.

Gold offers a unique set of advantages that most traditional assets can't replicate:

Inflation hedge: When the purchasing power of paper currencies declines, gold has historically held its value. Investors often turn to gold when inflation runs persistently high and erodes the real return on cash and bonds.

Portfolio diversification: Gold has a low correlation with stocks and bonds, meaning it tends to move independently of those markets. Adding even a small allocation can reduce overall portfolio volatility.

Safe haven: During recessions, geopolitical crises, and financial market stress, gold tends to hold or gain value while riskier assets fall. It's widely viewed as a reliable store of wealth outside the traditional financial system.

The key trade-off is that gold generates no income. It pays no dividends and no interest, so your entire return depends on price appreciation, which makes it better suited to protecting wealth than building it.

Before diving into how to buy gold, it helps to understand how it's measured and priced. The units used in gold markets aren't the ones most Americans use day to day.

Gold is priced per troy ounce in markets worldwide. A troy ounce equals 31.1 grams, which is slightly heavier than a standard ounce (28.35 grams). That said, a troy pound is actually lighter than a standard pound, because the troy system uses 12 ounces per pound rather than 16.

Every gold spot price quote, ETF value, and bullion listing you encounter will be denominated in troy ounces.

Central banks, mining companies, and market analysts measure large gold holdings in metric tonnes. One metric tonne equals 32,150.7 troy ounces. So, when you read that a central bank added 50 tonnes to its reserves, that's roughly 1.6 million troy ounces of gold.

Understanding this conversion helps you make sense of supply and demand figures you'll encounter in gold market reporting.

There are several ways to get exposure to gold, ranging from buying the physical metal to purchasing shares of funds that hold it on your behalf. The right approach depends on your budget, goals, and how hands-on you want to be.

Buying physical gold means you own the actual metal outright. There's no fund structure or intermediary, just the asset itself. For beginners, government-minted coins are the standard starting point: They're globally recognized, easy to verify, and simple to resell.

Bars typically carry lower dealer premiums than coins, but coins come in fractional sizes (1/10, 1/4, and 1/2 oz) that make them more accessible if a full troy ounce is out of budget. Just factor in the ongoing costs of secure storage and insurance, which can add up over time.

Learn more: Who decides what gold is worth? How gold prices are determined.

Exchange-traded funds (ETFs) backed by physical gold are the simplest and most accessible way for most beginners to invest. These funds trade like stocks on major exchanges, and fractional shares make it easier to get started.

Expense ratios are typically low, but they can vary by fund. One important tax note: Many gold funds are classified as collectibles by the IRS, which are taxed at a higher rate. Make sure you understand what you're buying before you get started.

Read more: Investing in gold? Here’s how to avoid a tax hit.

Instead of buying gold directly, you can buy shares in companies that mine it. When gold prices rise, miners' profit margins can expand faster than the metal itself, offering leveraged upside.

The flip side is that mining stocks carry company-specific risks that have nothing to do with the price of gold. Examples include management decisions, labor disputes, costs, and geopolitical exposure in the regions where they operate.

Investing in gold mining stokcs aren't a pure gold play, and they behave more like equities than commodities.

Mining-focused funds, including both ETFs and mutual funds, hold baskets of gold company stocks instead of physical metal. Mining ETFs trade on exchanges like their physically backed counterparts, while gold mutual funds are bought and sold at end-of-day prices through a fund provider.

Both spread company-specific risk across multiple companies, but returns depend partly on company performance, not just the price of gold. They're a reasonable option for investors who want equity-style exposure to gold, but they're a different bet than owning the metal itself.

A gold IRA is a self-directed individual retirement account that holds physical gold rather than stocks or bonds. It offers the tax advantages of a traditional or Roth IRA while giving you exposure to the metal.

The catch is that gold IRAs require a specialized custodian, and they come with setup fees, storage fees, and annual maintenance costs that can eat into returns. They're better suited to investors with a long-term retirement strategy than those just getting started.

Gold futures and options contracts allow investors to speculate on or hedge against future price movements without owning physical gold. A standard gold futures contract covers 100 troy ounces.

These instruments are highly leveraged — meaning small price moves can produce large gains or losses — and they require a solid understanding of derivatives markets. As a result, they're generally not suitable for beginners and are best left to experienced traders.

Learn more: What’s ahead for stocks and gold? What experts are watching.

A full troy ounce of gold is out of reach for many beginners, but you don't need that kind of money to get started. Gold ETFs are the most accessible entry point — many brokers offer fractional shares, meaning you can invest with as little as $1 to $5.

If you prefer physical gold, fractional coins and one-gram bars bring the cost down significantly compared to a full ounce. Dollar-cost averaging is another useful strategy that involves investing a fixed amount on a regular schedule. This approach lets you build a position over time without trying to time the market.

Related: How much gold would $1 million buy at different points in history?

Gold prices are driven by a mix of macroeconomic, institutional, and geopolitical forces that often interact with one another:

Gold tends to perform best when real interest rates — nominal rates minus inflation — are low or negative. In that environment, yield-bearing assets like bonds become less attractive, and gold becomes a more competitive store of value. When the Federal Reserve raises rates aggressively, gold often faces headwinds for the same reason.

Central banks around the world hold gold as a reserve asset alongside foreign currencies. Large-scale buying programs by major central banks — particularly in emerging markets — have become a significant structural driver of gold demand in recent years, and shifts in that buying can move prices meaningfully.

Wars, financial crises, trade conflicts, and political instability all tend to push investors toward gold as a trusted store of value outside the conventional financial system. The more uncertainty in the world, the stronger this flight-to-safety effect tends to be.

Of course, these drivers don't operate in isolation. A geopolitical shock that simultaneously stokes inflation fears and prompts expectations of looser monetary policy can send all three forces moving in the same direction at once.

Read more: What would happen if all the gold in the world was sold tomorrow?

Gold can be a smart addition to a diversified portfolio, but it works best as a complement to other assets rather than a core holding. Most financial advisors suggest keeping gold to around 5% to 10% of a portfolio, enough to provide meaningful diversification without crowding out income-generating investments.

For beginners with limited capital, gold ETFs and fractional physical gold make it possible to start small and build gradually through dollar-cost averaging. If you're already contributing to tax-advantaged retirement accounts and have a solid foundation in stocks and bonds, a modest gold allocation can add resilience during inflationary periods or market downturns.

The most important thing is to understand what you're buying. Gold isn't a path to outsized returns, and it won't pay you while you wait. But for investors who value stability, diversification, and a long-term store of wealth, it has earned its place.

Learn how to invest in gold by considering gold's strengths, historic behavior, and the pros and cons of physical gold versus gold mining stocks and ETFs.

A gold IRA and physical gold differ in liquidity, tax treatment, storage, and fees.

The two primary gold prices investors should know are spot prices and gold futures prices. Learn the difference, the historical price of gold, and the current dynamics.

Gold has the same high-level risk as any investment. Would-be gold investors should understand the risks associated with price, speculation, opportunity cost, and fraud.

A gold IRA is a self-directed IRA designed for gold and other precious metals. Learn the differences between it and traditional IRAs, tax implications, pros and cons, and alternatives.

If you had $1 million in 1900, you could buy 53,000 ounces of gold. Today, that amount would be worth $278 million. See how gold prices have changed over time.