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Good Delivery

A Good Delivery gold bar. It weighs about 12.4 kg, or about 400 troy ounces.
A Good Delivery silver bar. It weighs about 31.1 kg, or about 1000 troy ounces.

Good Delivery is a set of rules for large bullion bars. The rules are issued by the London Bullion Market Association (LBMA). They describe the size, weight, purity, shape, and marks of gold and silver bars used in the wholesale bullion market.[1] The rules also say which places that refine metal can be put on the LBMA Good Delivery List.

Good Delivery bars are large and have high purity. They usually have a shape like a trapezoid prism. This shape comes from the mould used to cast the bar. It helps make the bar even and gives it sloping sides.[2][3]

Good Delivery Rules

The full Good Delivery rules are in an LBMA document called The Good Delivery Rules for Gold and Silver Bars: Specifications for Good Delivery Bars and Application Procedures for Listing. The document gives rules for purity, weight, size, look, marks, and production of gold and silver bars. It also gives rules for weighing, packing, and delivery. It explains how the LBMA checks that refineries follow the rules.[4]

The current edition of the Good Delivery Rules was published in January 2026.[4]

Basic rules

Gold bars

  • Purity: at least 995.0 parts per thousand pure gold
  • Marks: serial number, refiner's mark, purity, and year of making
  • Gold content: 350–430 troy ounces, or about 11–13 kg
  • Recommended size:
    • top length: 210–290 mm
    • top width: 55–85 mm
    • height: 25–45 mm

Silver bars

  • Purity: at least 999.0 parts per thousand pure silver
  • Marks: serial number, refiner's mark, purity, and year of making[5]
  • Silver content: 900–1100 troy ounces, or about 28–34 kg, from 1 January 2025; 750–1100 troy ounces, or about 23–34 kg, for bars made after 1 January 2008; and 500–1250 troy ounces, or about 16–39 kg, for bars made before 1 January 2008
  • Recommended size:
    • top length: 250–350 mm
    • top width: 110–150 mm
    • height: 60–100 mm

The weight should not usually be stamped on gold or silver bars. This is because the bars are officially weighed when they are delivered. That weight is the official weight. It may be different from the weight first marked on the bar. The weight can also change if the bar is handled or sampled.[6]

Non-Good Delivery

Bars that do not follow the Good Delivery rules are called Non-Good Delivery bars. If they look like Good Delivery bars but do not fully follow the rules, they must be marked "NGD". This shows that they are not Good Delivery bars.[6]

LBMA Good Delivery List

The LBMA keeps two Good Delivery Lists of approved refineries: one for gold and one for silver. These refineries must meet minimum rules, such as time in business, net worth, and production amount. They must also show that they can make Good Delivery bars. Companies on the list agree to be checked by the LBMA. Companies that do not take part in regular checks are removed from the Good Delivery List and moved to the Former List.[4]

Good Delivery Referees

Five companies are approved by the LBMA as Good Delivery Referees. They help supervise the Good Delivery system and check companies with Good Delivery certification.[7] Their main tasks are:

  • checking companies that apply to be listed;
  • checking refineries already on the Good Delivery List;
  • giving technical advice.

The companies approved as Good Delivery Referees are:[7]

  • Argor-Heraeus SA (Switzerland)
  • Metalor Technologies SA (Switzerland)
  • PAMP SA (Switzerland)
  • Rand Refinery (PTY) Ltd (South Africa)
  • Tanaka Kikinzoku Kogyo K.K. (Japan)

References

  1. ↑ "LBMA - Good Delivery Rules". LBMA. Retrieved 11 November 2015.
  2. ↑ "GLOSSARY OF ADVANCED COMPOSITE MATERIALS TERMS – Composites Australia". Retrieved 6 May 2026.
  3. ↑ "LBMA Good Delivery Gold Bars: Standard and List Mechanics". Golden Ark Reserve. 29 April 2026. Retrieved 6 May 2026.
  4. ↑ 4.0 4.1 4.2 "Good Delivery List Rules, Conditions for Listing for Good Delivery Refiners". LBMA. January 2026.
  5. ↑ "Understanding the Marks on Silver Bars". Vintage Silver. 5 April 2022.
  6. ↑ 6.0 6.1 "The Good Delivery Rules for Gold and Silver Bars: Specifications for Good Delivery Bars and Application Procedures for Listing (v1.1)". The London Bullion Market Association. January 2019. Retrieved 29 September 2019.
  7. ↑ 7.0 7.1 London Bullion Market Association: LBMA Referees.

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