Nephrite
Origin
From Latin lapis nephriticus, via Ancient Greek λίθος νεφÏιτικός, meaning kidney stone, because jade was believed to have cured kidney stones.
Full definition of nephrite
Noun
nephrite
(countable and uncountable; plural nephrites)- (mineralogy) A semi-precious stone, one of the two types of stone commonly referred to as jade, (the other being jadeite).