Source: https://artemesia-violette.tumblr.com/post/80075159406/demi-parure-of-emeralds-a-gift-from-tsar Real-world provenance: Demi-parure of emeralds, a gift from Tsar Alexander I to Frances Anne, the wife of Lord Charles Vane-Stewart, 3rd Marquess of Londonderry, Ambassador to Vienna. IC provenance: originally created by Hattie_Vermeyen and later sold to agents of Tzar Alexander I.