This beautiful engagement ring features a 5X7mm oval cut beautiful lab grown alexandrite surrounded byMoissanite .color-change stone in 14k/18k gold ,Nadia style,Marquise ,with a curved moissanite matching band Ring details- -Center Stone is a 5x7mm oval Cut Lab Treated Alexandrite. -Alexandrite Color: Blue/Purple (Occasional Hints of Green) -Material: Sterling Silver, 10k/14k/18k gold, Platinum -Halo surrounding the stones are moissanite. Wedding Bnad: Moissanite diamonds