Chan then custom-made Doute’s “dream engagement ring,” which features a 4.27-carat elongated emerald-cut diamond and a natural white diamond hidden halo set atop a 14-karat white gold band ...

A stock image of an emerald engagement ring. Janette Facknie Tasker/iStock / Getty Images Plus. While ovals and yellow gold remain dominant among younger millennials, he points out that emerald ...