Step 1: Preheat your oven to 400°F (200°C).
Step 2: In a large mixing bowl, whisk together the flour, granulated sugar, brown sugar, baking powder, baking soda, and salt until well combined.
Step 3: Cut the cold butter into the flour mixture until it resembles coarse crumbs.
Step 4: In a separate bowl, whisk together the cream, egg, and vanilla extract until well combined.
Step 5: Pour the wet ingredients into the dry mixture and gently stir until just combined.
Step 6: Fold in the chocolate chips until evenly distributed throughout the dough.
Step 7: Turn the dough out onto a floured surface and pat it into a circle about 1 inch thick. Cut into 8 wedges.
Step 8: Place the scone wedges onto a baking sheet lined with parchment paper. Brush with cream and sprinkle with turbinado sugar.
Step 9: Bake for 15-20 minutes or until golden brown.
Step 10: Allow to cool on a wire rack before serving.