Wash all fruit under cool running water and blot dry with a paper towel.
Remove the stems from the strawberries, then cut the berries in half. For larger berries, cut into quarters. Set aside.
Peel the mandarin oranges and divide the fruit into segments, removing any excess white strings. Set aside.
Peel and chop the mango into bite-sized cubes. Set aside.
Cut and core the granny smith apples, then dice them into bite-sized pieces, briefly dipping the pieces into a small bowl of lemon juice to prevent browning. Set aside.
In a large, wide serving bowl, arrange the 6 fruits into individual piles around the bowl, creating a rainbow color wheel effect.
Drizzle lemon juice over the fruit, and sprinkle fresh chopped mint and freshly grated ginger. Toss to combine, then serve immediately.