On a large platter, arrange the tomato pieces, avocado cubes and cucumber slices.

Take the mandarin orange and slice it in half; peel and cut one half into small slices and add them to the platter.

Juice the other half of the orange into a small bowl, then add the honey, champagne vinegar, and olive oil. Whisk the ingredients together and then drizzle over the platter of tomatoes, avocados, cucumbers and oranges.

Sprinkle finely minced chives over the dish and season well with salt and pepper.