Which rare green variety of the mineral beryl is valued as a gem?

What is the raised deck at the stern of a ship called? A predatory seabird called the jaeger is a type of which bird, chosen as an NFL nickname in 1975? A rare daguerreotype survives of which First Lady, born in 1768? Which actor who played John Shaft in 1971 became a rare male victim of breast cancer? A ratio of systolic and diastolic values measures what? A reading room at the Lorain Public Library in Ohio is named for which native of the city, a 1988 Pulitzer Prize winner? A real 19th-century white whale called Mocha Dick may have inspired which 1851 novel? The Chernaya River in Crimea runs just east of which city that was besieged in 1854 and 1855?