3.81 GIA Emerald Cut Sapphire Engagement Ring 14kThis three stone engagement ring made 'By Filigree' features a GIA certified 3. 81 carat emerald cut blue sapphire set in a four prong basket with claw prongs. Two trapezoid cut natural diamonds totaling . 64 carats flank the sapphire, each measuring 5. 60 x 4. 15mm. The emerald cut gives the sapphire a rectangular shape with step cut facets that showcase the stone's deep blue color and clarity, while the trapezoid side stones create geometric angles