Among the many ways investors can own physical gold, the 1 kilogram (kg) gold bar stands out as a popular choice for high-net-worth individuals, institutions, and gold dealers alike. Weighing 1,000 grams (approximately 32.15 troy ounces), this bar strikes a balance between value, portability, and liquidity.
Here’s everything you need to know about 1 kg gold bars, from their characteristics and pricing, to storage and investment appeal.
What is a 1 kilogram gold bar?
A 1 kg gold bar is a refined piece of gold bullion, typically produced by private mints or government-certified refineries. Each bar is usually 99.99% pure gold (also labeled as 999.9 fine), though some may be 99.5% pure depending on the mint. The bar often includes markings for its weight, purity, serial number, and the mint or refiner’s logo.
These bars come in two main forms:
Cast bars: Created by pouring molten gold into molds. They have a rugged, matte finish and may have slight variations in shape.
Minted bars: Cut from rolled gold sheets and stamped with designs. They have smooth, uniform surfaces and are more polished in appearance.
Pricing and value
The value of a 1 kg gold bar is directly tied to the current spot price of gold, which fluctuates daily. To calculate the approximate value, multiply the spot price per troy ounce by 32.15 (the number of troy ounces in a kilogram).
For example, if the spot price of gold is $3,000 per troy ounce:
- 1 kg = 32.15 troy ounces
- 32.15 × $3,000 = $96,450
A 1 kg gold bar became worth $100,000 USD for the first time when the price of gold surpassed $3,110.42 on March 31 2025.
In addition to the intrinsic metal value, dealers may charge a small premium over spot price to cover manufacturing, handling, and distribution costs. This premium is usually lower (percentage-wise) than for smaller gold products, making 1 kg bars more cost-effective for large-scale investment.
Why investors choose 1 kg bars
- Efficiency in Storage
A 1 kg bar offers a compact way to hold a significant amount of wealth. Compared to smaller bars or coins, fewer items are needed to store the same value. - Lower Premiums
Bulk gold purchases often come with lower markups. This means investors get more gold for their money compared to buying smaller denominations. - High Liquidity
Recognized worldwide, 1 kg bars from reputable refiners (such as PAMP Suisse, Metalor, Valcambi, or Perth Mint) are easily tradable on global markets. - Ideal for Diversification
Gold remains a hedge against inflation, currency devaluation, and market volatility. Owning larger bars can be an efficient part of a diversified investment portfolio.
Mints that produce 1 kg gold bars
When buying 1 kg gold bars, it’s important to choose bars by recognized refiners. And when buying gold online, stay with reputable dealers. It’s not worth the risk of buying on auction sites or online market places.
BFI Bullion stocks freshly produced 1 kg gold bars at low premiums directly from the Swiss refiner. They also provide secure insured storage in Switzerland, saving the risk of self storage.
If you prefer self storage, BullionStar stock 1 kg gold bars from the leading mints, and they ship worldwide from their locations in Singapore, the US, and New Zealand.
Here are some of the most popular 1 kg gold bars that are available from leading mints.
1 Kilogram Perth Mint Gold Bullion Bar
Manufacturer: The Perth Mint
Country: Australia
Purity: 99.99%
For serious investors in physical gold who require a high quality 99.99% pure gold bullion bar from a reputable gold refinery, the Perth Mint 1 kilo gold bar is a natural choice.
Buy: 1 Kilogram Perth Mint Gold Bullion Bar
1 Kilogram PAMP Swiss Gold Bullion Bar
Manufacturer: PAMP
Country: Switzerland
Size: 116 mm x 51 mm x 8.67 mm
Purity: 99.99%
This 99.99% purity 1 kg cast gold bar is produced in Switzerland by the prestigious PAMP gold refinery in the Canton of Ticino. Each 1 kg PAMP cast gold bar has a unique serial number, which is also embossed on the bar’s front surface.
The front of the PAMP 1 kg cast gold bar shows PAMP’s famous insignia of 4 circles, and the bar’s weight and purity with the words “SUISSE 1 KILO FINE GOLD 999.9” stamped in the centre, as well as the official Swiss stamp of authenticity “Essayeur Fondeur”.
Buy: 1 Kilogram PAMP Swiss Gold Bullion Bar
1 Kilogram Metalor Swiss Gold Bullion Bar
Manufacturer: Metalor
Country: Switzerland
Size: 115 mm x 55 mm x 9 mm
Purity: 99.99%
The 1 kg Metalor gold bar is a premium investment-grade bullion bar refined by Metalor, a globally recognized Swiss refinery known for its high-quality precious metals. This gold bar is crafted with 99.99% pure gold (24-karat), making it a sought-after choice for both investors and wealth preservers.
Each bar is cast and stamped with Metalor’s hallmark, the weight, gold purity (.9999), and a unique serial number, ensuring its authenticity and traceability. Metalor is an accredited London Bullion Market Association (LBMA) Good Delivery refiner, guaranteeing worldwide recognition and liquidity.
Buy: 1 Kilogram Metalor Swiss Gold Bullion Bar
1 Kilogram Argor-Heraeus Swiss Gold Bullion Bar
Manufacturer: Argor-Heraeus
Country: Switzerland
Size: 116.5 mm x 51 mm x 9.5 mm
Purity: 99.99%
For serious investors in physical gold who require a high quality 99.99% pure gold bullion bar from a reputable gold refinery, the Argor-Heraeus 1 kilo gold bar is a natural choice. Argor-Heraeus, established in Switzerland in 1951, is headquartered in Mendrisio in the Swiss Canton of Ticino, Switzerland’s golden triangle of precious metals refineries.
The obverse of the 1 kilo cast gold bar is imprinted with the official Argor-Heraeus refinery stamp, an ‘AH’ motif encircled by the words ‘ARGOR HERAEUS SA’, The front surface also contains the refinery location ‘Switzerland’ and bar’s weight and fine gold content, ”1 KILO Fine Gold 999.9′, along with the bar’s unique serial number
The front of the 1 kilo gold bar bar is also imprinted with a stylised AH and the words MELTER ASSAYER in a rectangle. Licensed assayers (essayeurs jurés) accredited by the Swiss Central Office for Precious Metals Control work with the Argor-Heraeus refinery to ensure that gold bar output from the refinery meets strict quality standards.
As one of the preeminent gold refineries in the world, Argor-Heraeus is a member of the prestigious Good Delivery Referees Panel of the London Bullion Market Association (LBMA). and a member of the ‘Swiss Association of Precious Metals Fabricators and Sellers, known as the ASFCMP.
Buy: 1 Kilogram Argor-Heraeus Swiss Gold Bullion Bar
Storage and security
Due to their high value, 1 kg gold bars should be stored securely. Options include:
- Bank safety deposit boxes
- Private vault storage services such as BFI Bullion in Switzerland
- At-home safes (only with proper insurance and security)
Many investors also choose allocated storage, where the specific bar (with its unique serial number) is stored and tracked under their name, rather than being pooled with others.
Why the 100 gram gold bar is the standard of serious investors
The 1 kilogram gold bar provides efficiency, liquidity, and relatively low premiums for storing gold in bulk. The 1 kg bar is a more efficient way to store gold than stockpiling 100 gram gold bars, and easier to sell than a 400 oz gold bar.
For those looking to enter the gold market at scale, or consolidate their holdings into fewer, higher-value units, the 1 kg gold bar remains a smart and strategic choice.
[Goldscape is a partner of BFI Bullion and BullionStar.]
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