The name of this gemstone comes from the Spanish pieda de ijada, "hip stone"; it was thought to cure kidney diseases
[DOC] [TLE] Black Jade - Lantern Dancer [PAR] The name jade goes back to the time of the Spanish conquest of Central and 
South America and derives from piedra de ijada, i.e., hip stone, as it was seen as 
a protection against and cure for kidney disease.