Plan on sectioning the citrus and chopping the pineapple ahead of time. If you use canned or jarred fruit, save the juices and add them to the ambrosia.
Layer first 4 ingredients (in the order listed) in a large glass serving bowl or trifle dish. Sprinkle apple with lemon juice. Cover and chill 1 to 4 hours.
Sprinkle fruit mixture with coconut and mint. Gently toss just before serving.
*Blood oranges may be substituted.