From the depths of a cave in the Vermilion Sea, Ramon Salazar has wrested a black pearl so lustrous and captivating that his father, an expert pearl dealer, is certain Ramon has found the legendary Pearl of Heaven. But is there a price to pay for a prize so great? A Newbery Honor book.
A 1968 Newbery Honor Book

From the depths of a cave in the Vermilion Sea, Ramon Salazar has wrested a black pearl so lustrous and captivating that his father, an expert pearl dealer, is certain Ramon has found the legendary Pearl of Heaven. Such a treasure is sure to bring great joy to the villagers of their tiny coastal town, and even greater renown to the Salazar name. No diver, not even the swaggering Gaspar Ruiz, has ever found a pearl like this

But is there a price to pay for a prize so great? When a terrible tragedy strikes the village, old Luzon's warning about El Diablo returns to haunt Ramon. If El Diablo actually exists, it will take all Ramon's courage to face the winged creature waiting for him offshore.