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3 results for “Minamata Convention” in Science
Science · 8 August 2026
The Metal That Went Medical
…cturing a usable nanogold reagent means controlling a size distribution as tightly as any conventional pharmaceutical ingredient, which is why a small number of specialist suppliers dominate the field. · Why is colloidal gold red instead of gold-coloured? Because at nanometre sca…
Amara Okonjo · 19 min read
Science · 9 August 2026
The Metallurgy of Karat
…ment as the karat figure, expressed as parts per thousand. It is the modern international convention and it is unambiguous in a way that '18k' printed on an unhallmarked import is not. In jurisdictions with a compulsory hallmarking regime, that number has been verified by an inde…
Tomas Herrera · 17 min read
Science · 10 August 2026
Where Gold Actually Comes From
…added to since, the modern gold market is best understood as a closed loop rather than a conventional extractive industry. Mining does not create new supply in any absolute sense; it transfers gold from a form the market cannot use — trace concentrations locked in ordinary rock…
Tomas Herrera · 17 min read
