Vintage Signed B.E. Cook London Robin's Egg Blue Art Glass & Pearl Brooch

Could not find allot of history on the hallmark except Bijoux BEC B.E. Cook and that did not tell me much. I can trek you the construction & materials are designer quality. Features round marbled turquoise robins egg blue art glass cabs & faux pearls with a large oval cab in the center with a brass tone plated rope setting. Gold tone plating in the back. There is a small amount of coating loss on a few of the pearls. Hallmarks: B.E. COOK LONDON Measurements: 1 1/2” Condition: Beautiful vintage condition with noted flaws