Preheat the oven to 400°F. Line a baking sheet with parchment paper or a Silpat.
In a medium bowl, whisk together the flour, salt, sugar and baking powder. Add the cubed butter, and using your fingers, work it into the flour until the mixture resembles wet sand.
In a separate medium bowl, whisk together the heavy cream, eggs and vanilla. Add the wet ingredients into the bowl with the dry ingredients and stir the mixture several times then add the raspberries and chocolate chips, and mix until it forms a moist dough. (The raspberries will break apart slightly, but the less you stir the mixture, the more light and tender your scones will be. See Kelly’s Note.)
Transfer the dough onto a generously floured work surface and gather it into an 8-inch circle that’s about 3/4-inch thick. Cut the circle into 8 wedges. Space the scones out at least 2 inches apart on the lined baking sheet then place the baking sheet in the freezer for 20 minutes.
Remove the scones from the freezer. Brush the tops with heavy cream then sprinkle them with the sanding sugar. Bake the scones for about 20 minutes until pale golden and they’re baked through. Remove from the oven and serve immediately.