Preheat oven to 400 degrees Fahrenheit. Using a food processor (or pastry cutter or two knives) cut butter into flour until in resembles a coarse, crumbly meal. Stir in sugar, lemon zest, baking powder, and salt.
In a separate bowl combine eggs, cream, lemon juice, almond extract, and vanilla extract until smooth. Pour liquid mixture into dry mixture and stir until just combined and a dough forms.
Tip dough onto a lightly floured work surface. Shape dough into a circle about ¾” thick. Using a sharp knife divide the dough into 8 even triangles. Place dough on a lined or greased baking sheet with about 1” in between each piece. Bake for 15-18 minutes.
While scones are cooling prepare the glaze. Whisk together all glaze ingredients until smooth. Once scones are cool spoon glaze on scones. Let the scones sit for a few minutes and then glaze them a second time. Then top with sliced almonds