Both these earrings feature snake chains looped to make stunning patterns but apart from that they do actually look quite different. The chain patterns are very similar but they are different chain weaves. I think when you see them on the models this highlights how different they are in scale.
I like the Lara Bohinc pair for it's slightly larger design and changes in scale with the chain pattern. I also really like that the tassels are different lengths. It does give the earrings a more premium look.
However, I think the River Island pair is probably more practical in size. I have to admit that I've seen Lara Bohinc jewellery in person but I have not tried any of it on to feel weight or see the size when worn.