Preheat oven to 425°F. Line baking sheet.
Cut butter into cubes; chill. Wash berries, zest lemon.
Mix flour, sugar, baking powder, salt.
Cut in butter until crumbly; fold in zest.
Whisk cream, egg, lemon juice separately.
Combine wet with dry, stir gently.
Fold in raspberries carefully.
Shape dough into 8” circle; cut into 8 wedges.
Bake 15–17 minutes until golden.
(Optional) Whisk glaze; drizzle over cooled scones.