Ladies custom design 18k two-toned engagement solitaire originally rendered by a computer aided design specialist. The design features a 18k white gold four prong basket center setting specially assembled to an 18K yellow gold smooth 1.80 mm comfort edge shank (band portion) that is custom fit for a finger size 5.50. The center diamond is a 4.43 carat oval shape brilliant cut lab grown diamond that is IGI certified H color and VS2 clarity (Report Number Laser Inscribed) mounted and secured on the center setting. Lastly the ring includes a "18K" stamp to signify the authenticity of the gold karat.