Selected as one of the creatives in the Theaster Gates x Prada design programme, Catherine Sarr is a jewellery designer for our times. Her sustainable jewellery line, Almasika, was snapped up by Vogue and has adorned the likes of Michelle Obama and Reese Witherspoon; she is also co-founder of the Prix Sarr at Les Beaux-Arts Paris, which presents three awards annually to students for excellence in a body of artistic work. She speaks to Danielle about philanthropy and being a "vector of change".