It’s a question that doesn’t necessarily have a right answer – the results will depend on your audience. Studies show that sites and content that contain images of actual people tend to perform better than those that don’t, but these things can work differently in different contexts, so it isn’t a given.
The two images showing in this carousel ad perhaps offer the best of both worlds. Firstly, jewellery that is shown in a simple but prettily framed way, then jewellery that is actually being worn, to give the audience a better idea of scale and the way it might look on them if they make a purchase. Both images are aspirational in this example.