Add to a large pitcher the white grape juice and pomegranate juice. Pour the juice into 1 muffin tin, filling the cups half of the way up. Drop a few fresh raspberries and pomegranate seeds into each muffin cup and place in the freezer until frozen.
Remove the muffin tin from the freezer and remove the ice cubes with a small spatula; let sit out for a minute if they don't pop out. Add ice cubes to punch bowl and serve!