A polished metal rim wraps the outside of the halo in this setting, giving the accents a crisp border. Inside, the Heart-Shaped Lab-Grown Diamond sits in prongs. Below the rimmed halo, a pavé row lines the shoulders of the band. The Platinum rim makes the halo stand out. That smooth outer ring sits between the halo accents and the pavé band, so two kinds of shine meet at the top.