Qualla: Sincura

Sincura: Introduction

Sat, 18 Apr 2026 00:00:00 GMT

One August in the 1840s, a mining camp in the Sincura range of central Bahia held about 8,000 people. By the following July, it held more than 30,000. A colonial correspondent sent the numbers back to Europe and they were reprinted, eventually, in a newspaper in New South Wales. The rush was about diamonds - the Paraguaçu River, flowing out of the Chapada Diamantina highlands, cut through a vein of them, and word traveled the way word always travels when stones worth years of wages can be picked out of a streambed. What the correspondent wrote about the first prospectors has the cold clarity of a man watching a place invent itself: "The first individuals who established themselves at the mine of Sincura were mostly convicts and murderers; and their presence was marked by burnings and assassination."

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Sincura: A River and a Rumor

Sat, 18 Apr 2026 00:00:00 GMT

The Paraguaçu rises in the Chapada Diamantina, the highland plateau that dominates central Bahia. Its water flows east toward the Bay of All Saints, cutting through sandstone and quartzite whose geology in places produces alluvial diamonds - stones washed out of their original ma...

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Sincura: What the Ground Gave Up

Sat, 18 Apr 2026 00:00:00 GMT

The diamonds of Sincura were not uniformly prized. Stones from Paraguaçu, the correspondent wrote, were mostly "of a dun colour and very irregular conformation" - the kind of diamond that worked for industrial or low-grade jewelry use but not the high-grade market. The stones fro...

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Sincura: What Is Left

Sat, 18 Apr 2026 00:00:00 GMT

The Bahian diamond rush eventually faded, outcompeted by the South African fields in the 1870s and 1880s. What is left today is harder to see from above. Some of the mining villages are still there - Mucugê, Lençóis, Andaraí, Igatu - folded into the Chapada Diamantina National Pa...

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