Delight the one you love with this deep blue gemstone and lab-grown diamond engagement ring. An oval london blue topaz centers the breathtaking style while lab-grown diamonds sparkle on the botanical-inspired shank. 14k yellow gold 9. 0 x 7. 0mm oval london blue topaz in a talon-prong setting marquise-cut and round lab-grown diamonds 1/3 ct. T. W. Of certified lab-grown diamonds color f/clarity vs2 includes certification card