(Balance) Custom Marquise diamond engagement ring

18k yellow gold shank, platinum head, 6 prong, 1.8mm with hidden halo, add diamonds to prongs, lab grown diamonds

center: lab grown diamond, marquise, 3.51ct, E, VS1. Igi 629470399

custom made. $3350 paid. +500 for new cad and new design. Balance $3850