CAROLINE DE GUITAUT is Senior Curator of Decorative Arts, Royal Collection Trust. She is an expert on the work of Carl Fabergé, on which she lectures and publishes internationally and has curated several major exhibitions. She has contributed to numerous Royal Collection catalogues, including Royal Treasures (2002) and Victoria and Albert Art & Love (2010). Her own publications include Fabergé in the Royal Collection (2003), Royal Fabergé (2011), Diamonds : A Jubilee Celebration (2012) and The Queen's Coronation 1953 (2013).
STEPHEN PATTERSON is Head of Collections Information Management, Royal Collection Trust. He has published and lectured in Britain and Europe on insignia and is the author of Royal Insignia (1996). He has been researching Russian works in the Royal Collection for the past five years.