deTOLEDO
A diamond dealer's view

Origins

Markets, mines, the trade, what twenty years of buying rough diamonds at the source taught me, and what the big houses won't tell you.

Laurent de Toledo examining a diamond with a loupe
The craft
July 2026

The lynx eye, how I really assess a diamond's clarity

The briefke, the 10x loupe, the 30 centimetres of first impression: the real process, step by step.

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Gondwana
Mines of the world
July 2026

Diamonds are born different. They all look alike afterwards.

Gondwana, tectonic plates, carbonados, how a diamond's geological origin shapes everything it is, before it's even cut.

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Angolan rough diamonds
Mines of the world
July 2026

Angola, The highlands and rivers that feed the Lundas

Bié, Catoca, Luele, Tshikapa, Cuango, Angola's diamonds and their journey from the planalto to the Lundas.

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Angolan rough diamonds
Field notes
July 2026

Angola, Field notes from a rough diamond buyer

ASCORP, LKI, KP&P, Nzagi, Lucapa, Cafufu, twenty years on the ground, broken roads and extraordinary diamonds.

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🇨🇩
Mines of the world
July 2026

The DRC, as big as Europe, and still so unexplored

Kasaï, Tshikapa, Mbuji-Mayi, Kisangani, the ethnic groups, the rivers, the diggers, and an unforgettable bush life.

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🇳🇦
Mines of the world
July 2026

Namibia, Stars Fallen from the Sky

Sperrgebiet, Orange River, Debmarine, and the Namibian sawable, consistent and of exceptional purity.

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🇸🇱
Mines of the world
July 2026

Sierra Leone, Crystal White and the Zimmi Colour

Kono, Kenema, Bo, the Lebanese traders, and the Zimmi, the rarest yellow colour in the world.

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