In large bowl, combine flour, sugar, baking powder, and salt, whisking well. Using a pastry blender, cut butter into flour mixture until mixture resembles coarse crumbs.
In a liquid-measuring cup, combine cream, vanilla extract, and lemon extract, stirring well. Add to flour mixture, stirring until mixture is evenly moist. (If mixture seems dry, add more cream, 1 tablespoon at a time.) Working gently, bring mixture together with hands until a dough forms.
Turn dough out onto a lightly floured surface. Knead gently 3 to 4 times. Roll dough to a ½-inch thickness. Scatter ¼ cup blueberries over half of dough. Fold other half of dough over blueberries to enclose them. Lightly roll out dough again to a ½-inch thickness. Repeat scattering, folding, and rolling process with remaining ¼ cup blueberries.
Using a 2-inch round cutter, cut 12 scones from dough, rerolling scraps as needed. Place scones 2 inches apart on prepared baking sheet.
Bake until scones are lightly browned, 22 to 24 minutes.
Serve warm.
Recipe by TeaTime Magazine at https://teatimemagazine.com/blueberry-scones-recipe/