Martha Stewart's Blueberry Scones

Ingredients

• 2 cups All purpose flour
• 3 tablespoons Granulated sugar plus more for sprinkling tops
• 1 tablespoon Baking powder
• 3/4 teaspoon Salt
• 6 tablespoons Unsalted butter cold cut into pieces
• 1-1/2 cups Fresh blueberries rinsed & picked over
• 1 teaspoon Lemon zest
• 1/3 cup Heavy cream plus more for brushing tops
• 2 large Eggs lighty beaten