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3 results for “Troy ounce” in Science
Science · 8 August 2026
The Metal That Went Medical
…t the nanometre scale does something no other convenient material does as reliably: it announces its own state, in colour, to the naked eye. · Why small gold is red · A bulk gold surface reflects. A gold particle twenty nanometres across — smaller than the wavelength of visible l…
Amara Okonjo · 15 min read
Science · 9 August 2026
The Metallurgy of Karat
Pure gold is too soft to hold a stone, too soft to hold an edge, and the wrong colour for half the world's taste. Almost everything you own that is gold is a designed alloy — and the design is where t…
Tomas Herrera · 16 min read
Science · 10 August 2026
Where Gold Actually Comes From
Every gram of gold on Earth was manufactured in an astrophysical catastrophe, arrived here after the planet had already formed, and was then concentrated by hot water. Three separate accidents, none o…
Tomas Herrera · 18 min read
