Catherine usually wears the third band on her ring finger with her engagement ring and wedding band. It is Annoushka Eclipse Diamond Eternity Ring.
The £995 ring has been described as, “Brilliant-cut micro-pavé white diamonds with a cumulative weight of 0.23 carats are meticulously hand set into this 18ct white gold eternity ring, putting a uniquely modern twist on a classic piece of jewellery”. The piece was also available with personalisation. It is no longer available but interest can be registered with the label’s website.