For the guava vinaigrette: Whisk together the grapeseed oil, guava nectar, pineapple juice, vinegar, shallot, garlic and cumin. Add salt and pepper to taste.
For the kale salad: Combine the kale, tomatoes, apricots, onion and pecans in a large bowl. Drizzle with the guava vinaigrette to taste. Refrigerate leftover dressing for up to 1 week.