Among the various sizes of gold bars that are available, the 100 gram gold bar offers a practical balance between affordability, liquidity, and investment value. Whether you’re a first-time buyer or an experienced investor looking to add to your holdings, here’s why the 100g bar is such a popular choice.
What is a 100 gram gold bar?
A 100 gram gold bar weighs exactly 100 grams or approximately 3.215 troy ounces. It is usually made of 99.99% pure gold (often stamped as “999.9 fine gold”) and comes from well-known mints and refineries around the world. Each bar is typically stamped with:
- The bar’s weight (100g)
- The purity (999.9 or 99.99%)
- The mint or refinery’s name or logo
- A unique serial number
These bars are available in two main forms:
Minted bars: Cut from gold sheets and stamped for a clean, precise finish. Typically sealed in tamper-proof packaging with a certificate of authenticity.
100 Gram Perth Mint Gold Bullion Bar
Cast bars: Made by pouring molten gold into molds. They have a more rugged appearance and may vary slightly in shape.
[100 Gram Metalor Swiss Cast Gold Bullion Bar]
Pricing and market value
The value of a 100 gram gold bar is determined by the current spot price of gold, multiplied by the number of troy ounces in 100 grams.
For example, if the spot price of gold is $3,000 per troy ounce:
- 100 grams = 3.215 troy ounces
- 3.215 × $3,000 = $9,645
A 100 gram gold bar became worth $10,000 USD for the first time when the price of gold surpassed $3,110.42 on March 31 2025.
Dealers usually charge a small premium over spot to cover manufacturing, certification, and handling costs. This premium is generally lower than that of coins or very small bars, making 100g bars more cost-effective for medium-sized investors.
Why choose a 100g gold bar?
- Affordable entry point
100g gold bars offer a manageable entry into physical gold investment without requiring the capital outlay of larger bars. - Lower premiums than coins
Compared to gold coins (such as 1 oz coins), 100g bars tend to carry lower premiums per ounce, offering better value for the gold content. - Easy to store and transport
Small enough to store securely in a home safe or bank deposit box, but still substantial in value, these bars offer excellent portability and convenience. -
High liquidity
100g gold bars from reputable mints are recognized and accepted by dealers worldwide, making them easy to resell when needed. - Ideal for incremental buying
For investors building a gold portfolio gradually, 100g bars allow for steady accumulation without large one-time expenses (such as with the 400 oz gold bar).
Mints that produce 100 gram gold bars
When buying gold bars, it’s important to choose bars by recognized refiners. And when buying gold online, stay with reputable dealers and avoid auction sites and other online market places.
BullionStar stock 100 gram gold bars from the leading mints, and they ship worldwide from their locations in Singapore, the US, and New Zealand.
BFI Bullion stocks freshly produced 100 gram gold bars at low premiums directly from the Swiss refiner. They also have the added benefit of providing secure insured storage in Switzerland.
Here are some of the most popular 100 gram gold bars that are available from leading mints.
100 Gram Perth Mint Gold Bullion Bar
Manufacturer: The Perth Mint
Country: Australia
Size: 47 mm x 27 mm x 4.3 mm
Purity: 99.99%
100 g Perth Mint gold bar is sealed in a tamper-proof assay card with a unique serial number and the signature of the chief assayer at the back.
Repeating kangaroo motifs decorate the back of the gold bar symbolising the great Australian Outback where gold has been mined for more than a century.
Buy: 100 Gram Perth Mint Gold Bullion Bar
100 Gram Metalor Swiss Gold Bullion Bar
Manufacturer: Metalor
Country: Switzerland
Size: 47.5 mm x 27.5 mm x 3.2 mm
Purity: 99.99%
100 gram gold bar minted by Metalor, a world renowned precious metals refinery based in Switzerland.
Buy: 100 Gram Metalor Swiss Gold Bullion Bar
100 Gram PAMP Swiss Gold Bullion Bar
Manufacturer: PAMP
Country: Switzerland
Size: 47 mm x 27 mm x 4.3 mm
Purity: 99.99%
This Swiss minted 100 gram gold bar in 99.99% purity is produced by world-renowned PAMP at its gold refinery in Ticino, Switzerland.
The front of most 100 gram PAMP gold bars features an artistic representation of Lady Fortuna, the Roman goddess of good fortune, depicted with symbols of prosperity, such as the cornucopia, or horn of plenty, overflowing with gold coins. Alternative editions of minted PAMP gold bars feature a ‘Rose’ design, and a ‘Liberty’ design depicting the Statue of Liberty.
The reverse of all 100 gram gold bars display PAMP’s well-known logo of 4 circles, along with the bar’s weight and purity “SUISSE 100g FINE GOLD 999.9”, and the official Swiss stamp of authenticity “Essayeur Fondeur”.
Each 100 gram PAMP gold bar comes presented in its own distinctive security CertiPAMP packaging which also doubles as it’s assay card. The card features ‘SWISS MADE’ written vertically long the right hand side of the card, and ‘PAMP’ written horizontally underneath. The back of each CertiPAMP card is stamped with the gold bar’s unique 7 digit Certificate Number, the weight and fineness of the bar, and the signature of PAMP’s Certified Assayer.
Buy: 100 Gram PAMP Swiss Gold Bullion Bar
100 Gram Argor-Heraeus Swiss Cast Gold Bullion Bar
Manufacturer: Argor-Heraeus
Country: Switzerland
Size: 45 mm x 24 mm x 5.5 mm
This 100 gram cast gold bar is a 99.99% pure gold bar comes presented in a PET transparent tamper-proof blister pack which doubles as the bar’s assay card.
Known by Argor-Heraeus as a classic molten gold bar, the front of the 100 gram cast gold bar is stamped with the Argor-Heraeus refinery bar mark, the words ‘Argor-Heraeus SA encircling around the letters AH’ and the bar’s weight ‘100g’ and gold purity ‘999.9’. Each bar is also imprinted with the Argor Heraeus assay mark ‘AH melter assayer’ and each bar displays a unique serial number.
Argor-Heraeus is headquartered in the Swiss canton of Ticino and has a long history as a trusted and well-known gold bullion brand.
Buy: 100 Gram Argor-Heraeus Swiss Cast Gold Bullion Bar
100 Gram Argor-Heraeus Swiss Gold Bullion Bar
Manufacturer: Argor-Heraeus
Country: Switzerland
Size: 50 mm x 28 mm x 4 mm
Purity: 99.99%
The 100 gram minted gold bar from Argor-Heraeus is a 99.99% purity gold bar with a high-lustre finish and rounded edges. The front surface of the 100 gram minted gold bar is imprinted with the Argor-Heraeus refinery stamp of the letters ‘AH’ encircled by the words ‘ARGOR HERAEUS SA’, The front face also records the refinery location ‘Switzerland’ and the bar’s weight and fine gold content, ‘100g Fine Gold 999.9’.
Each bar also has a unique serial number inscribed on the front surface.
The 100 gram minted gold bar comes presented in a transparent tamper-proof blister pack which doubles as the bar’s assay card. The reverse of this presentation pack also displays the bar’s weight and fine gold content, along with the signature of the Argor-Heraeus certified assayeur.
Buy: 100 Gram Argor-Heraeus Swiss Gold Bullion Bar
100 Gram United Kingdom Gold Britannia Bullion Bar
Manufacturer: The Royal Mint
Country: United Kingdom
Size: 54.6 mm x 31.6 mm x 3.6 mm
Purity: 99.99%
The 100 gram Gold Britannia bar minted by The Royal Mint in .9999 purity. Each 100 gram Gold Britannia bar comes sealed in Certiline packaging, guaranteeing the gold bar’s authenticity in terms of purity and weight.
The Britannia Gold Minted Bars carry 3 security features:
– Micro-text around the edge of Britannia’s shield spells out the words ‘DECUS ET TUTAMEN’, which translates to ‘an ornament and a safeguard’.
– Textured animation creates a wave motion behind Britannia when the bar is moved and
– A latent image switches between a trident and a padlock when the bar is rotated.
The Royal Mint is a world renowned precious metals refinery based in the United Kingdom and the producer of the famous Britannia coin range.
Buy: 100 Gram United Kingdom Gold Britannia Bullion Bar
100 x 1 Gram Valcambi CombiBar Gold Bullion Bar
Manufacturer: Valcambi
Country: Switzerland
Size: 74.00 mm x 105.00 mm x 0.85 mm
Purity: 99.99%
The 100 gram Gold CombiBar from Swiss refiner Valcambi is a unique investment gold bar that can be divided into 100 x 1 gram gold bars. The patented Gold CombiBar is the only gold bullion bar on the market with this unique construction.
The innovative design of the Gold CombiBar comprises a 10 x 10 rectangle of 1 gram gold bars of 9999 fineness, presented in a secure translucent casing which also contains the gold bar’s assay certificate displaying the bar’s unique serial number.
Each constituent miniature gold bar is attached to one or more adjacent bars, held together by grooves within the larger gold bar. These grooves are strong enough to keep the gold bar intact, but flexible enough to allow each individual small gold bar to be detached. The individual 1 gram gold bars can then be sold, exchanged, gifted, or used in transactions, and provides the owner with ultimate flexibility.
Each of the 100 gold bar segments is individually stamped with the Valcambi logo design, and inscribed with “1g fine gold 999,9” and Valcambi’s “Essayeur Fondeur” stamp of authenticity. So when detached, each gold bar still retains Valcambi’s hallmark of trust.
Valcambi is the largest gold refiner in Switzerland, and its gold bullion products are highly respected throughout the world for their Swiss craftsmanship and guarantee of quality.
Buy: 100 x 1 Gram Valcambi CombiBar Gold Bullion Bar
Storage and security
Owning gold requires responsible storage. Many investors choose to:
- Store bars at home in a safe (with insurance coverage)
- Use safety deposit boxes at banks.
- Use specialist vault storage providers such as BFI Bullion in Switzerland.
Most minted 100g bars come sealed in tamper-evident packaging that includes a certificate of authenticity, which enhances resale value and buyer confidence.
Why the 100 gram gold bar is the sweet spot for flexibility and value
For investors looking for a practical way to own physical gold, the 100 gram gold bar hits a sweet spot. It’s large enough to offer efficiency in pricing and small enough to provide flexibility in selling or trading. Recognized globally, easy to store, and cost-effective, 100g bars are a favorite among both retail investors and precious metals enthusiasts.
Whether you’re starting your gold journey or adding to your collection, the 100 gram gold bar is a solid, smart, and versatile choice.
[Goldscape.net is a partner of BullionVault and BullionStar.]
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