7 Bejewel yourself
The bigger, the better — though not necessarily all at once (see P is for… Parure).
Designer: crystal necklace, £1,580, by Nicolas Ghesquière for Balenciaga; 020 7317 4400.
High street: diamanté necklace, £178, Butler and Wilson; 020 7409 2955,
butlerandwilson.com