Arena Stage is offering two tickets to August Wilson's Gem of the Ocean, a powerful and evocative look at the culture and tradition of 20th centry African-American life. Set in 1904 Pittsburgh, the play follows mystical 285-year-old matriarch Aunt Ester as she leads spiritual journeys to the mythical City of Bones, where truth has the power to "wash clean" the troubled souls who seek solace in her peaceful house.