1kg Silver Bars
Buy 1kg silver bars in the UK
Invest in 1kg silver bars with StoneX Bullion, the UK and Europe's trusted platform for buying investment-grade silver bullion online. With nearly two decades of experience and more than 100,000 investors served, we offer a secure way to buy LBMA-approved 1 kilo silver bars from world-leading refiners including Argor-Heraeus, Valcambi, and Nadir Metal Rafineri.
Enjoy live pricing updated every 60 seconds, competitive spreads, and fully insured delivery across the UK and Europe.
What is a 1kg silver bar?
The 1kg (1000g) silver bar is the largest standard size in our silver bullion range and the most cost-efficient way to invest in physical silver. Containing 32.15 troy ounces of fine silver, a single 1kg bar offers substantial weight in one compact unit — the preferred format for serious silver stackers, bulk buyers, and long-term investors seeking the lowest premium per gram.
Key features of 1kg silver bars:
- High purity: Struck in 999 or 999.9 fine silver
- LBMA-approved: Sourced from globally recognised refiners
- Lowest premium per gram in our silver bar range
- Each bar individually numbered for full traceability
- Highly liquid: Widely traded and easily resold worldwide.
About the refiners
Our 1 kilo silver bars are produced by three of the world's most respected refiners:
Argor-Heraeus: Founded in 1951 in Mendrisio, Switzerland, Argor-Heraeus is one of the most respected LBMA Good Delivery refiners in the world. Its 1kg silver bar is renowned for precision craftsmanship and competitive premiums, making it a long-standing favourite amongst European investors.
Valcambi: Established in 1961 in Switzerland, Valcambi is another LBMA Good Delivery refiner with a global reputation for quality. Its 1kg silver bars combine Swiss precision with the lowest premiums available on larger silver formats.
Nadir Metal Rafineri: Founded in 1986 in Turkey, Nadir is an LBMA-accredited refinery known for producing high-purity 999 silver bars at exceptionally competitive prices — a popular choice for cost-conscious bulk silver investors.
Design and features
1kg silver bars are produced primarily as cast bars, formed by pouring molten silver into moulds and finishing with a distinctive rough-cast texture. Each bar carries the refiner's hallmark, "1000g" or "1 KG" weight stamp, "999" or "999.9" fineness mark, and a unique serial number. Cast bars are favoured at this size because the production method keeps premiums low whilst remaining unmistakably authentic.
Selected 1kg bars are also produced as minted bars with a polished surface, sharper detail, and tamper-evident assay packaging — preferred by collectors who value presentation over premium savings.
1kg silver bar specifications
- Weight: 1,000 grams (32.15 troy ounces)
- Purity: 999 or 999.9 fine silver
- Refiners: Argor-Heraeus, Valcambi (Switzerland), Nadir Metal Rafineri (Turkey)
- Formats: Cast (standard) and minted (selected issues)
- Serial number: Each bar individually numbered
- VAT status: Subject to VAT in the UK.
Why buy 1kg silver bars?
- Lowest premium per gram: The most cost-efficient way to buy physical silver bullion
- Bulk investing: Ideal for serious stackers and long-term portfolio building
- Compact storage: Substantial silver weight in a single, easy-to-store unit
- Strong industrial demand: Silver plays a vital role in solar, electronics, EVs, and renewable technologies
- Inflation hedge: Physical silver helps protect purchasing power during inflationary periods
- Diversification: Silver offers low correlation with stocks and bonds, helping balance portfolio risk
- Globally recognised: 1kg bars from LBMA refiners are easily resold worldwide.
How to buy 1kg silver bars in the UK
- Check live silver prices: Updated every 60 seconds based on the London Bullion Market Association (LBMA)
- Choose your bar: Select from Argor-Heraeus, Valcambi, or Nadir Metal Rafineri 1 kilo silver bars
- Pay securely: Complete checkout via bank transfer or credit card
- Receive insured delivery: All 1kg silver bars are discreetly packaged and fully insured for delivery across the UK and Europe.
FAQs
How many ounces is a 1kg silver bar?
A 1kg silver bar contains 32.15 troy ounces of fine silver.
Are 1kg silver bars VAT-free in the UK?
No. Unlike investment gold, all silver bars — including 1kg sizes — are subject to VAT in the UK.
What's the difference between cast and minted 1kg silver bars?
Cast bars are made by pouring molten silver into moulds, giving them a textured, hand-poured appearance and lower premiums. Minted bars are precision-struck for a polished, detailed finish but carry higher premiums.
Are 1kg silver bars a good investment?
Yes. They offer the lowest premium per gram in our silver bar range, making them the most cost-efficient way to acquire physical silver in bulk.
Which 1kg silver bar offers the best value?
The Argor-Heraeus 1 Kilo Silver Bar typically carries the lowest premium, whilst Valcambi and Nadir bars offer competitive alternatives from equally trusted LBMA-accredited refiners.
Is it safe to buy 1kg silver bars online?
Yes. StoneX Bullion offers secure checkout, live pricing, and fully insured, discreet delivery across the UK and Europe.
Invest in 1000g silver bars today
Buy LBMA-certified 1kg silver bars online with StoneX Bullion, trusted by more than 100,000 investors across the UK and Europe. Enjoy competitive spreads, live pricing, and fully insured delivery direct to your door.
Browse our full range of 1kg silver bars and start your investment journey today.