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,
Art Deco articulated diamond strap sautoir and aquamarine briolette pendant necklace, French c.1925, of geometric design, the diamond ribbon strands converging to a pronounced V-shaped front, suspending a large aquamarine drop of briolette cut,