Place the grapes, cheddar and jicama onto the skewers, alternating them until there are three of each item on each skewer. In a small bowl stir together the yogurt, cilantro, lime zest and juice, honey and salt until well combined. Serve the skewers with the sauce for dipping. *Can substitute 1/3 large English cucumber, seeded and cut into 1/2 inch chunks if jicama is difficult to find.