Diamond, Cultured Pearl, Mother-of-Pearl, Gold, Sterling Silver, Steel Brooches The lot includes a brooch featuring full-cut diamonds, set in 18k white gold, suspending a cultured pearl measuring 7.70 mm, completed by carved patinated steel, attributed to Marsh & Co.(Dimensions: 3-1/16 inches x 3/4 inch);a sterling silver brooch(1-11/16 inches x 1 inch);together with a brooch featuring carved mother-of-pearl, set in 10k gold(Diameter: 1-1/4 inches).Gross weight 22.70 grams.