The Pearl Button Allende to rehabilitate the surviving tribespeople; the concentration camps set up under Pinochet; how inmates were tortured and how their bodies, weighted with lengths of rail, were dropped from helicopters into the Pacific; how one corpse was washed ashore; and finally how one of the lengths of rail recovered from the sea had a mother-of-pearl shirt button encrusted to it. The Pearl Button The Pearl Button () is a 2015 Chilean documentary film directed by Patricio Guzmán. It was screened in the main competition section of the 65th Berlin International Film Festival where it won the Silver Bear for Best
Pearl are also commonly seen in necklaces. Circled pearls are characterized by concentric ridges, or rings, around the body of the pearl. In general, cultured pearls are less valuable than natural pearls, whereas imitation pearls have almost no value. One way that jewelers can determine whether a pearl is cultured or natural is to have a gemlab perform an X-ray examination of the pearl. If X-rays reveals a nucleus, the pearl is likely a bead-nucleated saltwater pearl. If no nucleus is present, but irregular and small dark inner spots indicating a cavity are visible, combined with concentric rings of organic substance,