An Edwardian platinum aquamarine and diamond brooch, early 20th century, centring an octagonal step-cut aquamarine weighing an estimated 25.00 carats, millegrain-set within a conforming pierced frame set with old and rose-cut diamonds, case by Heming & Co., 28 Conduit Street London. W, and presentation inscription: presented to Mrs G. H. Trott by Cammell Laird & Co. Ltd., Birkenhead, on the Occasion of the Launch of M. V. 'Melbourne Star', 7th July, 1936., Mv Melbourne star was initially launched as a British refrigerated cargo liner. She was built by Cammell Laird and Co in 1936 as one of blue star Line's Imperial Star-class ships. She served in the second World War and is distinguished for her role in Operation pedestal to relieve the siege of Malta in August 1942. Mv Melbourne star was eventually sunk by torpedo in 1943 with the tragic loss of 115 lives, 40 x 30 mm, 12.8gms