gold ring with diamond, turquoise and coral

An 18k yellow gold dress ring with two rows of 12 oval cabochon-cut corals around it. The bottom row has slightly larger corals and a gold border between the corals. On top is a white gold flower set with twelve brilliant-cut diamonds, centered with a round  cabochon cut turquoise set in six yellow gold claws. At the bottom of the ring is a border of twisted gold wire and two gold balls on the shank, which consists of five bands tapering from wide to narrow, numbered: 2553, circa 1960.

weight: 27 g
ring size: 16+ mm / 5 1/2 US / 51
dimensions: 27.2 x 24 mm
shank width: 4.2 – 12 mm