LBMA Good Delivery Bars
LBMA Good Delivery Bars: how it works, why it matters for gold, historical patterns, and actionable signals. Sourced from LBMA, WGC, central banks. Updated 2026-06-01.
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As of October 26, 2023, LBMA Good Delivery bars are the global standard for high-purity gold, meeting stringent specifications set by the London Bullion Market Association. These bars are essential for wholesale market transactions, ensuring quality, assay, and provenance for institutional investors and refiners worldwide.
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- Guide category
- Technical
- Asset covered
- Physical gold (XAU/USD, XAU spot)
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- LBMA, World Gold Council, central bank data
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- Investors, researchers, and analysts
- Last refresh
- 2026-06-01
What this means
The LBMA Good Delivery system establishes rigorous standards for gold bars traded on the wholesale market. These specifications cover minimum purity (99.5% gold), weight, dimensions, and importantly, the refiner's accreditation. Only bars produced by LBMA-approved refiners, meeting these precise criteria, are accepted in London's over-the-counter gold market.
Historically, the London market has been the epicenter of global gold trading. The LBMA's Good Delivery List evolved to formalize and standardize the quality of gold bars, building trust and facilitating international trade. This system ensures that bars traded are of consistent, verifiable quality, a cornerstone of market integrity.
For gold investors, particularly those dealing in larger quantities or seeking to trade internationally, LBMA Good Delivery status is paramount. It signifies a bar's acceptance and liquidity in major financial centers, assuring buyers of its authenticity and purity, thereby reducing counterparty risk and simplifying transactions.
Purity and Assay Requirements. LBMA Good Delivery gold bars must possess a minimum fineness of 99.5% pure gold (995.0 parts per thousand). Each bar undergoes rigorous assaying by an accredited refiner, with the results permanently marked on the bar itself. This includes the refiner's mark, a unique serial number, the gross and net weight, and the fineness, providing irrefutable proof of its composition.
Weight and Dimensional Specifications. While not rigidly fixed, LBMA Good Delivery bars typically fall within a specific weight range, commonly between 350 and 430 troy ounces (approximately 11-13 kg). The dimensions are also standardized to facilitate handling and storage in vaults. This uniformity is crucial for efficient trading and vault management within the LBMA system.
Refiner Accreditation and The Good Delivery List. The London Bullion Market Association maintains a 'Good Delivery List' of accredited refiners. Inclusion on this list requires a refiner to demonstrate consistent adherence to LBMA standards, including ethical sourcing and robust production processes. This accreditation is a critical indicator of a bar's quality and market acceptance.
Frequently Asked Questions
What is the minimum purity for an LBMA Good Delivery gold bar?
The minimum purity required for an LBMA Good Delivery gold bar is 99.5% pure gold, or 995.0 parts per thousand fineness.Who maintains the LBMA Good Delivery List?
The London Bullion Market Association (LBMA) maintains and publishes the Good Delivery List, which comprises accredited refiners meeting their stringent standards.Are all gold bars considered LBMA Good Delivery?
No, only gold bars produced by refiners on the LBMA's Good Delivery List, meeting all specified criteria for purity, weight, and assay, are considered LBMA Good Delivery bars.Why is LBMA Good Delivery status important for investors?
LBMA Good Delivery status signifies a bar's acceptance and liquidity in major global markets, assuring investors of its authenticity, purity, and ease of trading, thereby reducing risk.