Purple Sapphire and Diamond Rose Flower Brooch

A purple sapphire and diamond, single rose, flower head brooch, with green to white plique à jour enamel leaves. The curved petals are pavé set with purple sapphires. The petal edges, anthers and one petal are set with eight-cut diamonds. The centre is set with a rose-cut diamond. Mounted in gold, with silver settings, signed Moira.