Set aside 1 cup of coconut water and freeze the rest in ice cube trays.
Put the coconut water, raspberries, the juice of half of the lime and cinnamon in a medium pan and bring to a boil. Let it boil for 3 minutes and taste the sauce.
Add the honey if necessary and place in a jar and set it in the fridge to chill.
Remove the coconut water ice cubes - they will be sticky - and place in a blender to crush into a slushie.
Add the crushed ice to a cup and then spoon the raspberry syrup on top. Top with frozen raspberries and slices of lime.