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3 results for “Ore grade” in Craft
Craft · 22 July 2026
Hallmarks and Assay: How Anyone Proves Gold Is Gold
…st, on why fire assay survives · XRF, and the honest limits of instant answers · X-ray fluorescence spectrometry is the workhorse of modern testing. Irradiate a sample, read the characteristic secondary X-rays each element emits, infer composition in seconds without damaging the…
Yusuf Demir · 12 min read
Craft · 5 June 2026
The Alchemy of Craft: What Goldsmiths Know That Machines Don't
…lary exists to negotiate between workability and durability. · Karat is a fraction, not a grade · The karat system divides by twenty-four. Twenty-four karat is pure gold; eighteen karat is eighteen parts gold in twenty-four, or 75 per cent by mass, stamped 750 in the millesimal s…
Yusuf Demir · 11 min read
Craft · 3 August 2026
The Wedding-Season Bid: How Jewellery Demand Sets the Floor
Half the world's gold is worn, not stored. In India and China that distinction barely exists — and the buying behaviour it produces is the most reliably contrarian force in the entire market. · Jewellery is roughly half of annu…
Yusuf Demir · 16 min read
