Jewelry
Cut, colour, clarity, carat, in that order
The four C are taught in the order that matters and bought in the reverse. Getting the order right is worth about thirty per cent of the price.
4 min read · 12 September 2026
Jewelry · Cut first, weight last
Enter a budget and the metal colour. The instrument allocates it across the four grades in the order that produces the best stone to look at, and draws the result to scale.
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Prices are indicative market ranges for well cut certified stones, not quotations. The point is the allocation and the size, and both hold even when the prices move.
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Jewelry
The four C are taught in the order that matters and bought in the reverse. Getting the order right is worth about thirty per cent of the price.
4 min read · 12 September 2026
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The Friday file
A short letter on Fridays: a single material examined, the arithmetic behind a purchase people get wrong, and the one line from the week worth keeping. No offers, because there is nothing to sell.