Peora 0.50 Carat Tanzanite Halo Ring Sterling Silver Sizes 5 to 9 Genuine Tanzanite, Rich Blue-Purple Color, Round Shape, 5 mm, 0.50 Carat 30 pieces Machine Cut Super Sparkling Cubic Zirconia Accents Ring is in Sterling Silver Exclusive Craftsmanship and Styling Includes Gift Box and 30 Day Money Back Guarantee