In 2019, Emma and the team at Philip Mould & Co. unearthed the earliest European portrait miniature of a black sitter: a portrait miniature of Zaga Christ (c.1608-1638) by Giovanna Garzoni (1600-1670). The discovery and the miniature’s subsequent acquisition by the Allen Art Memorial Museum were featured in The New York Times, The Guardian, Art Herstory and Art Daily. In 2020, the miniature was included in the Victoria & Albert Museum’s exhibition ‘Renaissance Watercolours’, as well as ‘The Greatness of the Universe' in the art of Giovanna Garzoni at the Palazzo Pitti.