Best Gold Bars to Buy in 2026 (1g to 1kg): Brands, Sizes & Premiums

The top gold bar refiners in 2026

Every reputable investment bar carries an LBMA Good Delivery pedigree — the global standard for purity (usually 999.9 fine) and worldwide resale. These are the names to look for:

How premium scales with bar size

The trade-off is divisibility: a 1 kg bar is the cheapest way to stack ounces, but you can't sell half of it. Valcambi's CombiBar solves this by scoring a bar into detachable 1-gram pieces — divisibility at a modest premium cost. Many buyers hold a mix: a large bar for the lowest cost per gram, plus smaller bars or coins for flexibility.

Cast vs minted bars

There are two ways to make a bar, and it affects both look and price:

• Cast bars are made by pouring molten gold into a mould. They have a rougher, rustic finish and the lowest premium — the best cost-per-gram for larger 100 g and 1 kg sizes.
• Minted bars are cut and stamped from cast strips, giving sharp edges, a mirror finish and detailed designs. They come sealed in an assay card — a tamper-evident 'birth certificate' with the weight, purity and a matching serial number — at a slightly higher premium.
• Never break the assay seal on a minted bar. Once opened, many dealers treat it like a plain cast bar and it can lose its certification premium.

How to verify a gold bar is genuine

Every bar we sell is sourced from an accredited refiner and backed by our authenticity guarantee — details on the authenticity page.

• Sigma Metalytics verifier reads the bar's core conductivity through its packaging in about a second — the best quick check for a sealed bar.
• Ultrasonic testing detects tungsten cores in large 1 kg and 400 oz bars.
• Brand security: PAMP's Veriscan app matches a bar's microscopic 'fingerprint', and Argor-Heraeus's Kinegram hologram is virtually impossible to replicate.
• Confirm weight and dimensions against the refiner's published specs, and remember investment-grade gold is non-magnetic.

Bars or coins? And how to buy

Bars give you the lowest cost per ounce and suit larger, set-and-forget holdings. Coins — Krugerrand, Gold Eagle, Britannia, Maple Leaf — carry slightly higher premiums but are faster to sell in single units; our gold coins vs bars and best gold coins guides compare them. Whichever you choose, at BTC Mints you can buy gold bars with Bitcoin, Monero or stablecoins — from 1 gram up to 1 kilo — priced live with a transparent premium, shipped fully insured in discreet packaging. Browse the range in the shop.