Preheat the oven to 375°F degrees. Lightly grease a baking sheet, or line it with parchment. Set baking pan aside.
In a large bowl, whisk together the flour, salt, sugar, nutmeg, cinnamon and baking powder.
Cut the butter into small pieces, or grate frozen butter. Using a pastry blender, cut the butter into the dry ingredients until you reach a "pea-sized" crumb.
In a separate bowl, whisk together the eggs, yogurt or sour cream, almond extract and heavy whipping cream. Combine until smooth.
Make a well in the middle of your dry ingredients. Pour the wet mixture into the center of the well. Stir the wet ingredients into the dry ingredients to combine. Add additional heavy cream if needed to reach the desired "drop scone" consistency. Dough should be slightly wet and easily drop off by a tablespoon. Keep in mind the fresh peaches will add additional liquid to the dough.
Add the peaches. Fold the peaches into the dough until everything is combined.
Drop the dough by the 1/4-cupful onto the prepared pan; a muffin scoop works well here.
Sprinkle the top of each scone with the coarse sparkling sugar, if desired.
Bake the scones for 20–25 minutes, until they're light golden brown. Remove them from the oven, place on a wire rack, and let them cool for a few minutes before transferring to a rack to continue cooling.
Serve warm, or at room temperature. Store at room temperature in an airtight container for up to two days.