Knowledge Centre
Precious Metals Knowledge Centre
Practical guidance on gold and silver products, purity, sourcing and international trade — 20 articles written for commercial buyers.
Gold
Practical guidance on gold products, forms, purity and international gold supply.
What Is Gold Doré?
Gold doré is semi-pure alloy produced before refining. Learn how doré differs from refined bullion, how it is valued and what documentation it involves.
5 min read
What Is Gold Bullion?
Bullion is gold valued by metal content rather than craftsmanship. An explanation of bullion forms, fineness, markings and how bullion is traded internationally.
5 min read
Gold Bar Sizes Explained
From small minted bars to large wholesale bars: how gold bar formats differ, why size affects cost per unit of metal, and how to choose a format.
5 min read
Questions to Ask Before Buying Gold
A checklist of questions that establish whether a precious-metals transaction is viable: counterparty, product, verification, documentation and delivery.
5 min read
Silver
Silver products, purity standards and commercial silver supply.
Silver Purity: 999 vs 999.9 vs 925
What the common silver fineness grades mean, where each is used, and how purity affects value and handling.
4 min read
Silver Bars: A Buyer's Guide
Practical guidance on buying silver bars: cast versus minted formats, purity, packaging, storage and the logistics implications of larger quantities.
5 min read
Assay & Purity
How precious-metal purity is measured, tested and reported in commercial transactions.
How Is Gold Purity Measured?
Karats, fineness and assay methods explained: how gold purity is expressed, how it is tested, and why the testing method matters in commercial transactions.
6 min read
What Does 999.9 Gold Mean?
999.9 describes gold that is 99.99% pure. What the figure means in practice, how it compares with 999 and 995, and why tolerance matters.
4 min read
24K vs 22K Gold: What's the Difference?
The practical differences between 24K and 22K gold: composition, durability, typical uses and how each is valued in commercial transactions.
4 min read
What Is a Gold Assay?
An assay determines the precious-metal content of a sample. How assays are performed, what an assay report contains and how results are used commercially.
5 min read
How to Verify Gold Purity
A practical sequence for verifying gold: documentation review, physical measurement, non-destructive testing and laboratory assay.
5 min read
African Precious Metals
Sourcing context for gold and silver across East and Central African markets.
How to Buy Gold from Africa
A practical guide for international buyers: how gold purchases from African markets are structured, from enquiry and verification through documentation and delivery.
7 min read
How to Buy Gold from Kenya
What international buyers should establish when purchasing gold through a Kenya-based trading company: counterparty checks, verification, export formalities and delivery.
6 min read
Understanding Gold Sourcing in Africa
How gold supply reaches international buyers from African markets, the role of trading companies, and what buyers should establish about origin.
6 min read
Gold Supply Chains in East Africa
How regional trade relationships, verification practice and export processes shape gold supply chains across East and Central Africa.
5 min read
What Is Responsible Gold Sourcing?
Responsible sourcing in practice: supplier identification, source information, record keeping and ongoing due diligence in precious-metals supply chains.
5 min read
International Trade
Documentation, export processes and logistics in cross-border precious-metals trade.
Market Insights
How precious metals are priced, quoted and compared.
Gold vs Silver: Understanding Precious Metals
How gold and silver differ in density, value per unit weight, industrial demand, storage requirements and typical transaction size.
5 min read
What Is a Troy Ounce?
The troy ounce is the standard weight unit for precious metals. How it compares with the avoirdupois ounce and why the distinction matters commercially.
3 min read
How Gold Is Priced
How the international gold price is formed, what a premium or discount represents, and how a physical quotation is constructed for a specific transaction.
5 min read
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