In a large bowl, combine the halved cherry tomatoes, chopped nectarines, thinly sliced cucumber, diced shallot, ciliegine, chopped parsley, and basil.
In a small bowl or jar, whisk together the champagne vinegar, lemon juice, olive oil, honey, and flaky salt. Taste and adjust the seasoning as needed with more lemon juice or honey.
Drizzle the vinaigrette over the salad mixture and toss everything to combine thoroughly.
Serve immediately, or refrigerate for up to 1 hour to allow the flavors to marinate.
