Ahead of the trend before her time, the future first lady said yes to the interlocking emerald-cut emerald ... insisted that the square-cut treasure was a "friendship ring." They would marry ...

A very rare, 21.52-carat Colombian “no oil” emerald-and-diamond ring will ... Highlights include a 12.55-carat vintage diamond ring by Harry Winston from 1953, with a presale estimate of ...