Farges, François (2014). "Les grands diamants de la Couronne de François Ier à Louis XVI". Versalia. Revue de la Société des Amis de Versailles. 17 (1): 55–78. doi:10.3406/versa.2014.938. ISSN1285-8412.
Strong, Roy (1966). "Three Royal Jewels: The Three Brothers, the Mirror of Great Britain and the Feather". The Burlington Magazine. 108 (760): 350–353. ISSN0007-6287. JSTOR875015.
Farges, François (2014). "Les grands diamants de la Couronne de François Ier à Louis XVI". Versalia. Revue de la Société des Amis de Versailles. 17 (1): 55–78. doi:10.3406/versa.2014.938. ISSN1285-8412.
Strong, Roy (1966). "Three Royal Jewels: The Three Brothers, the Mirror of Great Britain and the Feather". The Burlington Magazine. 108 (760): 350–353. ISSN0007-6287. JSTOR875015.