Jicama, a root vegetable with tan skin and white flesh, is available at most supermarkets. Its mild sweetness and crunchy texture make it a refreshing addition to salads.
Cut peel and pith from lime. Slice lime along membranes to release segments, and reserve segments.
Whisk lime juice and oil in a medium bowl, and season with salt and pepper. Add pear, jicama, and cilantro, and toss to combine. Fold in reserved lime segments, and season with more salt if desired. Serve immediately.