You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: WHAT THE "MEL" 
Clue: He penned the immortal introduction "Call me Ishmael"
herman melville

Category: MUSEUMS OF GERMANY 
Clue: A Baden-Baden museum devoted to the works of this Russian imperial jeweler opened in 2009
fabergé

Category: GEMS & JEWELRY 
Clue: These October birthstones may lose their color & crack if allowed to dry out

opals