Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine the flour, granulated sugar, baking powder, and salt. Whisk together until well combined.
Add the cold, cubed butter to the flour mixture. Using a pastry cutter or your fingers, work the butter into the flour until the mixture resembles coarse crumbs.
In a separate bowl, whisk together the heavy cream, egg, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and gently mix until just combined. Do not overmix.
Carefully fold in the fresh raspberries and dark chocolate chips, being cautious not to break the raspberries.
Turn the dough out onto a lightly floured surface and gently knead it just a few times until it holds together. Pat the dough into a circle about 1 inch thick.
Cut the dough into 8 wedges and transfer them to the prepared baking sheet, spacing them apart.
Brush the tops of the scones with a little extra heavy cream and sprinkle with raw sugar for added crunch.
Bake in the preheated oven for 20-25 minutes, or until the scones are golden brown and a toothpick inserted into the center comes out clean.
Allow the scones to cool slightly on a wire rack before serving.