This 18K yellow gold Rosa de la Cruz C initial diamond charm is made to exacting detail in the UK. Fitted with a top loop for attaching to chains, this piece is studded with white diamonds. The star nicknamed Lucy (after the Beatles song Lucy in the Sky with Diamonds) is essentially a diamond of ten billion trillion trillion carats. As this diamond star is 50 light years away from the Earth, we'll be frosting ourselves in Rosa de la Cruz jewellery until we can make it the Centaurus galaxy.