510 pages. There is an ownership inscription on the half title page and the pages are tanned. A clean, unmarked and solid copy."The Heart of Jade (Spanish: El corazón de piedra verde) is a novel by Spanish author Salvador de Madariaga, first published in 1942. It is widely regarded as an exceptional example of modern Spanish-language literature.Salvador de Madariaga y Rojo (23 July 1886 - 14 December 1978) was an "eminent liberal' Spanish diplomat, writer, historian, and pacifist, nominated for the Nobel Prize in Literature and the Nobel Peace Prize[2] and awarded the Charlemagne Prize in 1973. (Wikipedia)