This is a 925 sterling silver Moissanite Polki and Cubic Zirconia Ring from Missori Jewellery. Gemstones: It features a vibrant, emerald-cut natural ruby at its center. Halo Design: The center moissanite is surrounded by a radiating double halo of natural Polki . Metal: The ring is handcrafted in 925 sterling silver with 22k antique gold finish.