Follow the chain, not just the bar
A finished silver bar can reveal its refiner and fineness without revealing every circumstance of its production. Responsible sourcing asks a different set of questions: who supplied the material, where did it originate, and what risks accompanied its journey? Mined and recycled inputs can pass through several organisations before refining. Records and chain-of-custody information help reconstruct that route, but the existence of paperwork alone does not establish that every relevant risk was identified or resolved.
Due diligence is a continuing process
The OECD framework covers mineral supply chains from extraction to end use. It asks companies to identify and address risks such as serious human-rights abuses, conflict financing and financial crime. The work includes management systems, assessment, responses, independent checks and reporting. Its purpose is to improve decisions and outcomes through an ongoing process. A supplier review performed once cannot substitute for monitoring changing circumstances, investigating warning signs and following through on corrective action.
Understand what assurance covers
LBMA’s Responsible Silver Guidance sets sourcing requirements for refiners producing Good Delivery silver bars. Independent assurance examines conformance with the relevant requirements and the refiner’s reporting. Read the scope, period, level of assurance and any qualifications alongside the conclusion. The assessment concerns a defined organisation and process; it should not be stretched into an unlimited claim about every subsequent seller, every product carrying that refiner’s name or every possible environmental and social issue.
Keep separate questions separate
Purity, lawful ownership, responsible sourcing and investment value are related to different kinds of evidence. A sourcing claim does not establish a favourable purchase price, guaranteed resale value or an appropriate investment. Equally, an attractive market quote does not answer a provenance question. When comparing claims, identify the precise standard, the organisation assessed and the supporting report. Specific, verifiable information is more useful than an undefined label such as “ethical silver” presented without boundaries.
Sources & further reading
- OECD — Responsible mineral supply chains ↗
- LBMA — Responsible Silver Guidance: Introduction ↗
- LBMA — Independent third-party assurance ↗
Sources checked 14 November 2026. Reference organisations do not endorse this website. Price examples are hypothetical and educational.