Prepare the crust by adding the graham crackers, almonds, and melted butter to a food processor. Blend until the mixture resembles coarse brown sugar.
Firmly press the mixture into the base of a 7-inch (18 cm) springform cheesecake pan. Refrigerate while preparing the filling.
Blend the diced mango until completely smooth. Chill the puree until needed.
Sprinkle the gelatin over the room temperature water while whisking continuously. Place the bowl over a larger bowl of hot water to dissolve completely. Let cool to room temperature.
In a large mixing bowl, whip the cream until soft peaks form.
Add the softened cream cheese and ½ cup sugar. Beat until light, fluffy, and smooth.
Add half of the lime juice and gradually mix in 1 cup of the mango puree.
Stir in two-thirds of the dissolved gelatin until fully combined. Taste and adjust sweetness if desired.
Pour the No Bake Lime and Mango Cheesecake filling over the prepared crust. Smooth the top and refrigerate for at least 1 hour.
Mix the remaining mango puree with the remaining lime juice, sugar to taste, and the remaining gelatin.
Carefully pour the mango topping over the chilled cheesecake layer.
Cover and refrigerate for at least 3 hours, preferably overnight.
Garnish with fresh mango and lime slices before serving.