Sterling Silver 0.50ct Princess Lab-Grown Moissanite Halo Engagement Ring. This show-stopping sterling silver engagement ring features a lab-grown moissanite solitaire secured in the center of a cushion-shaped halo sparkling with pave set round brilliant cut lab-grown moissanite. Additional lab-grown moissanite encrusted on the band finish the look of this timeless style, making it the perfect selection for those who seek an eco-friendly choice for their engagement ring. Beautifully crafted in a brightly polished finish. Ring is adjustable in size, accommodating different ring sizes.