Luke Jennings reviews the Royal Ballet in Jewels:
Farrell turned Balanchine down, and in 1969 married another dancer and moved to Europe. But Diamonds remains, an icy monument to love and to the great St Petersburg ballet theatres of Balanchine's youth. In the ballerina role, partnered with elegant reserve by Rupert Pennefather, Alina Cojocaru is blue-white perfection, but there are moments when her dancing takes on a sad, secretive edge. It's as if she's reading Balanchine's foreknowledge of his loss in the ineluctable flow of his choreography. As if she's dreaming Farrell's dream of leaving.
A related review from Jenny Gilbert for the Independent:
In the same building, the Royal Ballet launched its new season with an evening of Balanchine. Jewels – purportedly inspired by a visit to a Fifth Avenue jewellery shop, though more likely the result of a canny Mad Men-style publicity stunt (it was 1967) – is really three distinct ballets linked by a slender theme.