Pare, cut in half and core the pears. If pears are very large, they may be cut in quarters. Place pears in medium saucepan, cover with cranberry juice, and grate nutmeg over fruit. Bring to a boil, then reduce heat. Simmer gently until pears are mostly transparent. Remove from heat. Chill at least 4 hours in the refrigerator in the juice. Serve in crystal dishes garnished with fresh mint leaves.