Gold Bars

Physical gold bars are standardized bullion units produced in defined weight formats and purity specifications.

Each bar is individually identifiable by weight, fineness, and refiner mark, enabling structured commercial acquisition and documented allocation.
Gold Bars

Official Supplier of Heraeus Precious Metals

Golden Ark Reserve is an official supplier of Heraeus Precious Metals for refinery-origin precious metals products.

Heraeus Precious Metals is part of the Heraeus Group, whose industrial origins date to 1851. Today is a global leader in the precious metals industry, covering the full value chain from trading and refining to bullion products and recycling.

We supply gold bars bearing the stamps of Heraeus Ltd (Hong Kong) and Argor-Heraeus SA (Switzerland), which is part of the Heraeus Group and is internationally recognized for LBMA Good Delivery refinery standards.

Heraeus Precious Metals Background

Gold Bars

Gold Bar 1 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 1
  • Fineness: 999.9
  • Dimensions LxWxH: 15 x 8.7 x 0.5 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 5 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 5
  • Fineness: 999.9
  • Dimensions LxWxH: 23 x 14 x 1 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 10 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 10
  • Fineness: 999.9
  • Dimensions LxWxH: 31.5 x 18.5 x 1.1 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 20 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 20
  • Fineness: 999.9
  • Dimensions LxWxH: 40.4 x 23.3 x 1.3 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 1 oz

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 31
  • Fineness: 999.9
  • Dimensions LxWxH: 40.4 x 23.3 x 1.8 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 50 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 50
  • Fineness: 999.9
  • Dimensions LxWxH: 49.7 x 28.5 x 2 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 100 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 100
  • Fineness: 999.9
  • Dimensions LxWxH: 49.7 x 28.5 x 3.9 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 100 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold
  • Weight (grams): 100
  • Fineness: 999.9
  • Dimensions LxWxH: 45 x 24 x 5 mm
  • Production Type: Cast
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 250 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 250
  • Fineness: 999.9
  • Dimensions LxWxH: 50.5 x 30.5 x 9 mm
  • Production Type: Minted
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 500 g

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 500
  • Fineness: 999.9
  • Dimensions LxWxH: 91 x 40.5 x 7.5 mm
  • Production Type: Cast
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 1 kg

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold
  • Weight (grams): 1000
  • Fineness: 999.9
  • Dimensions LxWxH: 116 x 51 x 9.2 mm
  • Production Type: Cast
  • Certificate: Yes
  • Serial number: Yes

Gold Bar 400oz (12.44 kg)

  • Manufacturer: Heraeus, Argor-Heraeus
  • Metal: Gold (Au)
  • Weight (grams): 12441
  • Fineness: 999.9
  • Dimensions LxWxH: 255 x 85 x 35 mm
  • Certificate: Yes
  • Serial number: Yes
  • Stock: Available

Allocation Records and Gold Bar Standards

Allocated gold bars are linked to the transaction through documented allocation records, while recognized bar standards support format clarity, handling consistency, and market acceptance across wholesale bullion workflows.

Allocation Records and Ownership Documentation

Allocated bars are linked to the transaction through allocation records and ownership-related documentation.

  • Supporting records may reference specific bar identifiers, weight, and fineness details
  • The documented structure links the allocated position to defined physical bars rather than pooled balances
  • Supporting records may also be used for delivery, transfer, or vault-placement execution where applicable

LBMA Good Delivery Standard

The LBMA Good Delivery standard is a recognized reference for wholesale gold bars used in major bullion markets.

  • Defines market-recognized specifications for weight range, purity, dimensions, and markings
  • Commonly applied to large-bar formats used in wholesale bullion transactions
  • Supports standardized handling, transfer, and delivery across large-bar execution pathways

View LBMA Gold Bars

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Buy Physical Gold

Explore Purchase Process

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Access the main section covering how a physical gold transaction is structured, from product format selection and commercial terms to payment confirmation, bullion allocation, ownership documentation, and delivery or vault placement options. The section also outlines the main execution stages, supporting records, and onboarding requirements relevant to qualified investors and corporate counterparties.

Delivery and Vault Placement Options

Client Contracted Custody by Brinks

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Third-party vault placement may be arranged through Brink’s where selected for the transaction. Storage jurisdiction, operator route, and supporting records are confirmed within the execution structure.

Delivery to 100+ Countries by Brinks

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International delivery and collection may be coordinated through Brink’s where engaged for the selected route. Brink’s states that Brink’s Global Services provides premium solutions and logistical support in over 100 countries.

Frequently asked questions

What gold bar sizes are available?
Access may be arranged across Heraeus gold bar formats for qualifying buyers meeting the applicable transaction threshold. The primary execution focus remains larger-volume transactions and larger bar formats, particularly 1 kg and 400 oz bars.
Prices shown on this page are indicative reference levels only. They do not constitute a binding offer, a confirmed sale price, or a commitment to sell at the displayed value.
Final transaction pricing depends on bar format, quantity, market conditions at the time of execution, applicable premium, delivery or vault-placement requirements, location, payment timing, and formal commercial confirmation.
The main operating focus remains 1 kg and 400 oz bars because these formats are used most often in larger-volume physical gold transactions. Additional formats may be arranged where transaction size, buyer profile, and product availability align with the applicable threshold.
Ownership-related documentation may include a commercial agreement, payment confirmation records, bullion allocation records, transaction identifiers, and supporting delivery or vault-related records depending on the selected structure.
Allocated bullion may be aligned either to delivery execution or to a vault-placement arrangement, depending on transaction scope, handling requirements, location, and the selected operating path.
1 kg bars are commonly used where flexible allocation and delivery structure are required. 400 oz bars are typically used in larger wholesale transactions where bar size, handling logic, and route requirements align with the selected execution structure.
Execution is subject to AML, KYC, source-of-funds review, sanctions screening, and related onboarding and transaction approval checks before instructions are issued.
Required documentation may include identification records, legal-entity records where applicable, representative authority documents, source-of-funds information, and delivery or vault-related instructions relevant to the selected transaction structure.
The Buy Physical Gold section sets out the main stages of transaction execution, including commercial terms, payment confirmation, bullion allocation, ownership documentation, and delivery or vault-placement pathways.

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