In addition, Ahluwalia also designed a new engagement ring for Royal Asscher called Legacy in which the signature Asscher cut diamond serves as the center stone of the platinum wave-like ring, with diamonds of different cuts detailing each side of the ring.
Mr Llewellyn also questions the theory that building-society conversions will herald a wave of takeovers, leading to efficiency gains as overcapacity is cut.
In the first of what is expected to be a wave of downgrades, Moody's has cut the rating of 131 subprime bonds because of higher-than-expected defaults.
Investors are also weighing the prospects for an interest-rate cut or other action by European Central Bank officials scheduled to meet Thursday, following another wave of disappointing economic data from the euro zone in recent days.