Both H.R.H. The Princess Margaret and H.M. Queen Elizabeth the Queen Mother were introduced to John Donald in the 1960s by Lord Snowdon. H.R.H. The Princess Margaret developed a regular patronage of the craftsman-jeweller while the H.M. Queen Elizabeth The Mother bought the occasional aquamarine-set piece, and usually for her daughter. In this brooch, the striking setting is designed to compliment the unusual aquamarine faceted personally by John Donald to achieve a naturalistic effect.