Soften gelatin in cold water. Stir to mix and set aside for 5 minutes.
Heat over low heat or over a double boiler to dissolve. The melted liquid should be clear.
In a mixing bowl, combine the lime rind, juice and sugar. Stir until sugar is dissolved. Stir in the gelatin. Cool mixture until lightly thickened but do not set.
Beat the cream with the sugar until stiff. Fold cream OR Cool Whip into the lime mixture. Spoon into crystal glasses or molds.
Serve with TANGERINE JELLY