1.50 Carat Emerald Cut Diamond Halo Engagement Ring1. 50 Carat Emerald Cut Diamond Halo Engagement Ring. This modern engagement ring features a 1. 50 carat emerald cut diamond. The center diamond is set horizontally, which gives the ring a substantial presence. Trapezoid and trilliant cut emeralds accent the center stone and provide a gorgeous contrast of color. Additionally, eighty four accent diamonds adorn the mounting, providing a dazzling sparkle from every angle. A scintillating modern