Chop cherries; set aside on the plastic plate. Mix pecans with nutmeg and cinnamon; set aside. Cover large baking sheet with waxed paper. Melt semisweet chocolate in small saucepan over low heat; stir constantly.
Pour melted chocolate in prepared pan. Quickly spread chocolate into a rectangle, about 14 x 8 inches or about 1/8 inch thick. Put in refrigerator; chill about 20 minutes. Melt white chocolate in small saucepan; stir constantly. Pour melted white chocolate over semisweet chocolate layer.
Quickly spread white chocolate to cover semisweet chocolate layer, using a metal spatula or knife.
Sprinkle pecans and cherries evenly over chocolate. Press cherries and pecans into chocolate. Chill in refrigerator several hours or overnight. Break into irregular pieces. Store in cool place in airtight container.