A vintage aquamarine and diamond ringA very pretty early 20th century cluster ring featuring a rectangular cut aquamarine measuring approximately 7 x 4mm(estimated weight 0. 75 carats), displaying a delicate pale seawater blue hue and set within a fine rim setting. Surrounding the centre stone is a halo of fourteen rose cut diamonds, each approximately 2mm, with an additional three 1. 5mm rose cut diamonds to each shoulder, giving a total estimated diamond weight of 0. 60 carats. The