In a large pitcher, combine the sliced strawberries, blueberries, and raspberries.
Add the freshly squeezed orange juice and honey to the pitcher. Stir well until the honey is fully dissolved.
Let the mixture sit in the refrigerator for at least 30 minutes to allow the flavors to meld.
When ready to serve, fill glasses with ice cubes and pour the berry and juice mixture over the ice, filling each glass about two-thirds full.
Top each glass with sparkling water and gently stir to combine.
Garnish with fresh mint leaves before serving.