Drain and save juice from cherries and crushed pineapple. Add enough water to make 2 cups. Bring to boil and mix with Black Cherry Jell-O to dissolve. Pour into large glass bowl, or mold, and refrigerate for about 1 hour or until cooled.
Stir in bing cherries and crushed pineapple to mold. Add Coke and enough water (about 4 oz.) to make 2 cups and stir into Jell-O and fruit mixture.