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Nephrite

/ˈnɛfraɪt/noun

The tougher of the two minerals sold as jade, a dense felted mass of amphibole fibres.

The Greek roots

νεφρός
nephrós
kidney

Literally: kidney stone

Follow a root:νεφρός5 words

The story of the word

Two languages named this stone after the same piece of folk medicine. Spanish colonists in the Americas called it piedra de ijada, stone of the flank, because it was worn against kidney pain, and that phrase wore down into English jade. European scholars translated the same idea into Latin as lapis nephriticus, and A. G. Werner clipped that to nephrite in the late eighteenth century. So jade and nephrite are the same superstition told twice.

How it travelled
Ancient Greek → Latin → German → English
First recorded
18th century

Same family

nephritisnephrologynephron

In a sentence

Maori toki were carved from nephrite hauled out of South Island rivers.

Built on the same root

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