Drottningens juvelsmycke is a classic Swedish novel by Carl Jonas Love Almquist. It was the first original historical novel to be written in Sweden, and it features one of Swedish literature's most enduringly popular characters, the intersex Tintomara. The novel is set in 1792 and weaves the story of the beautiful but sexless androgyne Tintomara around the assassination of King Gustav III of Sweden, commonly nicknamed 'The Theatre King', on the stage of Stockholm's Royal Swedish Opera at a masked ball in 1792.