Preheat oven to 400 degrees.
Zest an orange to get 2 teaspoons of zest.
In a large bowl, combine flour, sugar, baking powder, salt and orange zest.
Cut in butter with a fork until the mixture becomes dry and crumbly.
Add dried cranberries and stir.
In a small bowl, combine egg and buttermilk.
Pour into larger bowl and mix until a dough forms.
Turn onto a floured surface to knead.
Line a baking pan with parchment paper and place the dough on it.
Form the dough into a 10 inch circle and slice using a pizza cutter. You can easily make 10-12 slices.
Bake at 400 degrees for 15-20 minutes until the tops of the scones start to brown.
To make the glaze, combine the powdered sugar and the orange juice until there is smooth mixture with no lumps.
Drizzle the glaze over the scones.