In a pot, heat 2 tablespoons (30 ml / 1 fl oz) of olive oil over medium heat.
Add the chopped scallions and diced tomato and cook for 2 minutes until softened.
Add the uncooked rice, 1/2 cup (480 ml) water, salt, dill, parsley, and mint to the pot.
Stir to combine, then cover and cook for 5 minutes.
Remove from the heat and set aside to cool slightly.
To assemble, lay a grape leaf flat, shiny-side down.
Place about 2 teaspoons (10 ml / 0.3 fl oz) of the rice filling near the stem end.
Fold the bottom of the leaf up over the filling, fold in both sides, and then roll it up tightly.
Repeat the process with the remaining grape leaves and filling.
Line the bottom of a large pot or pan with any extra or torn grape leaves to prevent the dolmas from sticking or burning.
Arrange the rolled dolmas snugly in the pot, seam-side down.
Add enough water to just cover them.
Drizzle the remaining 2 tablespoons (30 ml / 1 fl oz) of olive oil over the dolmas.
Bring the water to a slow simmer, then reduce the heat, cover, and cook for 20 minutes.
Just before serving, drizzle with fresh lemon juice.
Serve warm or at room temperature.