How Gold Is Refined
A high-level explanation of how mined or recycled gold becomes high-purity refined metal.
Refining removes impurities and separates gold from other materials. Industrial refiners use specialized processes under controlled conditions.
From concentrate to dore
Mines may produce a gold-rich concentrate or a semi-refined metal called doré. Its exact composition varies and can include silver and other metals.
Refining to high purity
Refiners use metallurgical and chemical processes to raise purity to commercial specifications. The chosen process depends on feed material, scale and desired final purity.
Industrial refining involves hazardous chemicals and high temperatures, so it should only be performed by properly equipped professionals.
Assay and certification
Refined products are tested to verify composition and may be stamped or packaged with weight and purity information.
Key takeaway
The best gold decisions usually come from understanding the product, the price components, the risks, the seller or custodian, and the purpose the gold serves in your plan. Compare multiple sources and verify important details independently.