A gold mounted, diamond-set floral spray by Jean-Baptiste Fossin centred with a Sweet Briar rose in full bloom surrounded by foliate stems, two pairs of buds emerging to the sides each centred with an old-cut diamond as is each petal of the flower, the graceful flow and volume of the work a testimony of the jeweller's direct, meticulous study of a fresh cutting of the wild flower, carefully representing its overlapping leaves and stems at the base.

The brooch belonged to Princess Katarina Pawlowna Bagration, Countess Skavronsky (1783-1857), the wife of Prince Pyotr Ivanovitch Bagration (1765-1812). He was the son of Ivane Bagrationi, a descendant of the Georgian Royal dynasty. A Russian general and hero of the Napoleonic wars, Prince Pyotr would be mortally wounded during the battle of Borodino in the outskirts of Moscow, in 1812. The Princess’s father was Count Pavel Martinovich Skavronsky, Chamberlain of the Royal Court, whose own father Count Karel Samuiloch Skavronsky was the eldest brother of Catherine I of Russia. A niece and favourite of military leader and statesman Prince Grigory Potemkin, Princess Katarina was educated at the Court of Empress Catherine the Great and served as lady-in-waiting to Empress Marie Feodorovna, second wife to Tsar Paul I. Her marriage in 1800 to Prince Bagration was an unhappy one and by 1805 she was living in Vienna, soon embarking on a relationship with diplomat Klemens von Metternich who in 1810 fathered her daughter, named Marie-Clementine after his own name.

A celebrated beauty, Princess Bagration hosted a lavish ball in honour of Tsar Alexander I in 1815 to coincide with the Congress of Vienna; her famously flattering white muslin attires would be worn by her for the rest of her life. She moved to Paris the same year, where she continued to live in considerable splendour, her circle of friends including members of the French aristocracy and illustrious authors such as Honoré de Balzac and Stendhal.

It was her passion for luxurious jewellery that drew her to Jean-Baptiste Fossin, where she remained a devoted customer for some forty years. Amongst the many opulent jewels he made for her were a pair of earrings hung with briolettes that had belonged to Queen Marie-Antoinette. They were listed in the Bagration inventory compiled by the firm in 1836. So too was a sumptuous pink spinel and diamond-set parure consisting of a tiara, comb, necklace and earrings.