![Boule_Ring Boule ring](https://www.langantiques.com/university/wp-content/uploads/elementor/thumbs/Boule_Ring-q88jzg91i3xc1ruzxfddy5uo8fz4avxyxoxre4cpl4.jpg)
A boule ring is a ring with a domed head which is usually set with pave set gemstones. It came into fashion around 1935. See also bombé. The term boule (from French: ball, globe) is also applied to flame fusion synthetic gemstone rods (originally applied to the more globular shape of the first produced crystals).