Coronet Setting

A coronet setting is a circular setting with high prongs that gets its name from its resemblance to a crown. Created to secure the stone, these settings are sawn to form a crown and incised to hold the girdle of the stone with the top of the prongs pushed over the crown of the stone.
Edwardian Ring with Coronet-Set Diamonds and Burma Ruby.

Edwardian Ring with Coronet-Set Diamonds and Burma Ruby.