This portrait probably dates to the time between her marriage in 1801 and death in 1803.She wears a cameo of Nikolai Shermetev prominently, probably to assert her legitimacy.
From the museum’s Web site; cracks removed with Photoshop and exposure increased.
Praskovia wears a doubled dress for this portrait.
Keywords: Praskovia Kovalyova-Zhemchugova, P. I. Sheremeteva, Прасковья Ивановна Жемчугова, графиня Шереме́тева, Countess Shermeteva, Kovalyov family, Shermetev family, Countess, Russian, curly coiffure, hair jewelry, over-dress, high enclosing neckline, clasps, draped necklace, cameo, quarter length close sleeves, jeweled arm bands, cuffs, jeweled belt, close skirt, under-dress, U-neckline, wrap