Three designs for brooches with stylized leaves and pearls

Drawing with three designs for brooches, part of an album of drawings in pen and ink of designs for jewelry in the style of the French School of the 19th century, designed for the French jewelry house Mellerio-Borgnis. The first design consists of an angel motif standing on a small, scrolling stand, with three strips of rectangular motifs, the one in the middle ending on a frame with a cross motif, and the other two ending on a round pearl; this brooch would have been manufactured using gold and silver to achieve different colors of metal in the design. The second design, in the same sheet as the first, consists of three strips of red pealrs, handing from scrolling branches of gold with two scrolling, stylized, green leaves, one under the other; the red stones could have been corals or rubies in the manufactured jewel. The final design, on a separate sheet of paper, pasted next to the first, consists of a bundle of thin branches of gold with oval pearls, with an interlacing green ribbon that holds the bundle together. The green areas of the designs would likely have been achieved using enamel or small (semi-) precious stones of the desired color in the manufactured jewel.