National Pearl Harbor Remembrance Day National Pearl Harbor Remembrance Day National Pearl Harbor Remembrance Day, also referred to as Pearl Harbor Remembrance Day or Pearl Harbor Day, is observed annually in the United States on December 7, to remember and honor the 2,403 citizens of the United States who were killed in the Japanese surprise attack on Pearl Harbor in Hawaii on December 7, 1941. On August 23, 1994, the United States Congress, by , designated December 7 of each year as National Pearl Harbor Remembrance Day. On November 29, President Bill Clinton issued a proclamation declaring December 7, 1994, the first National Pearl Harbor
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,