Early 20th century Russian diamond scroll collar necklace by Vassily Finikov, St. Petersburg, reputedly by Bolin and gifted in 1905 to Duchess Cecilie of Mecklenburg-Schwerin, converting to a tiara,
Early 20th century diamond and onyx bow brooch by Cartier, London c.1920, of double loop design with central line of graduated old brilliant cut diamonds,