Buy a 1 troy ounce gold bar

What exactly is a troy ounce?

A troy ounce is the international unit of weight for precious metals, equal to exactly 31.103 grams. The name traces back to the French trading city of Troyes, an important European trade centre in the Middle Ages, where the need arose for a fixed measure for precious metals. To this day, the gold price is quoted worldwide in US dollars per troy ounce.

Important: a troy ounce is not the same as the regular ounce (28.35 grams) used for everyday goods. In the precious metals trade, "1 ounce gold" almost always means 1 troy ounce. We explain the full difference in our knowledge article on the difference between a troy ounce and a regular ounce.

In the video below, Rolf van Zanten explains what 1 troy ounce of precious metal means:

The 1 troy ounce gold bar aligns perfectly with international financial markets. The current gold price is quoted on exchanges in London and New York in US dollars per troy ounce. This means the value of your bar is instantly recognisable and comparable anywhere in the world, from Europe to Asia.

That recognisability makes this weight exceptionally liquid: a 1 oz gold bar from a reputable producer is accepted worldwide without further assay. For many private investors, this is the point at which buying physical gold gets serious: a compact bar with a clear gold value that also remains easy to transfer later on.

1 troy ounce gold bar or gold coin?

A 1 troy ounce gold bar and a 1 troy ounce gold coin both contain 31.103 grams of pure gold, but serve different needs. A gold bar is generally somewhat more affordable to buy, since the production process is simpler and there's no coin design or collector value involved.

A gold coin such as the Krugerrand, Maple Leaf or Britannia is legal tender and widely recognised in private trading, but usually carries a slightly higher premium. If you're focused purely on gold value and price, a bar is usually the better fit; if coin status or design matters to you, look at coins.

At The Silver Mountain, you can choose from a wide range of 1 troy ounce gold bars from LBMA-accredited producers. The gold value is identical across every bar; the differences lie in premium, finish and recognisability.

• Umicore: Belgian producer, known for sustainable, circular production.
• C. Hafner: German precision, works with recycled gold (urban mining).
• Valcambi: Swiss finish with assay card and serial number.
• Pamp Suisse: the iconic Lady Fortuna, prized for its design.
• Heraeus Kinebar: featuring a Kinegram hologram as an added authenticity feature.
• Royal Mint & Perth Mint: coin bars such as the Britannia, backed by mint heritage.

Alongside standard bars, we also stock coin bars of 1 troy ounce. If you'd rather buy a gold coin, you'll also find the gold Krugerrand, Maple Leaf and Philharmonic in 1 troy ounce.

Which 1 troy ounce gold bar suits you?

The best 1 troy ounce gold bar depends on your preference for brand, price, packaging and availability. The intrinsic gold value is virtually identical across bars of equal weight and purity; the difference lies mainly in premium, producer and finish.

New gold bars are typically delivered in sealed packaging with a unique serial number and certificate of authenticity. Pre-owned bars can be attractive if you're focused mainly on gold value: these have previously been in circulation but are checked for weight, purity and authenticity before resale. Use the filters on this page to select by mint, series, year of issue, availability and price.

At 31.103 grams, the troy ounce sits between 20 and 50 grams by weight, but stands out for its status as the global standard. The table below places this weight alongside the other denominations:

If you'd like to compare the full range, browse all gold bars or explore buying physical gold more broadly.

The price of a 1 troy ounce gold bar consists of the current gold price (spot price) plus a premium. The gold price determines the intrinsic value; the premium covers production, packaging, logistics, insurance and trading margin. Because the gold price moves continuously, our prices are updated automatically every three minutes.

On our current gold price page you can see the live price per gram, kilogram and troy ounce, making it easy to check how the product price compares to the market value. When comparing, don't look only at the total price, also check the price per gram and the premium: a cheaper bar isn't always the best choice if availability, packaging or future tradability matter to you.

• Directly comparable to the market price: because the gold price is quoted internationally per troy ounce, a 1 oz gold bar lets you see at a glance how the asking price relates to the current gold value, with no need to convert from grams or kilograms.
• Premium per gram varies by bar: the markup above the metal value depends on the producer, finish and availability. A bar with a well-known design or added security feature, such as a hologram, can carry a higher premium than a standard version with the same gold content.
• New or pre-owned: pre-owned 1 troy ounce bars follow the same gold price but are often offered slightly more affordably. They have previously been in circulation and are checked for weight, purity and authenticity before resale.

The Silver Mountain was founded in 2008 and has been active in physical precious metals for over 17 years. We are an authorised AFM licence holder (registration number 12048860); AFM supervision covers our services relating to precious metals combined with storage. This supervision does not apply in the same way to the physical delivery of an order.

You buy at the current gold price, can choose insured, allocated storage through Edelmetaal Beheer Nederland (EBN), and have your order delivered fully insured, with our own delivery service if preferred. Collection is possible by appointment in Baarn and The Hague. Our reliability is rated 4.8/5 based on over 4,500 Trustpilot reviews.