"The leading distinction in magnets is the sex, male and female, and the next great difference in them is the colour. Those of Magnesia, bordering on Macedonia, are of a reddish black; those of Breotia are more red than black; and the kind that is found in Troas is black, of the female sex, and consequently destitute of attractive power."

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Source: The Natural History of Pliny.

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Pliny the Elder

Naturalist, Author

Pliny the Elder was a Roman author and naturalist, known for his encyclopedic work 'Natural History,' which explores the natural world and human knowledge.

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