... 6mm white heart good quality man-made cubic zircon 2.good quanlity 3.best ... 2,various colour, any sizes 3,fine quality and competitive price 4,fast deliveryMaterialCubic ZirconiaCorundumSpinelGlassTopazPeridotGarnetShapeButterfly ... marquise, baguette, octagon, rectangle, pillow, flower, star, cushion, pear, moon, round, square, teardrop, cross, ax, ... ! 6mm white heart good quality man-made cubic zircon