Prosciutto with Pears

3 firm-ripe pears, peeled and thinly sliced
3 tablespoons lime juice
16 thin slices of prosciutto (about 1/2 pound)
Freshly ground pepper

Place the sliced pears in a mixing bowl, sprinkle with the lime juice and toss. Divide them among four individual serving plates. Drape about four slices of the prosciutto over each portion of pears and grind a little fresh pepper on top.