Shop our extensive selection of 1.8 Carat diamonds and build the perfect ring today. When you buy from us, you can be sure your diamond was responsibly sourced and graded by either the GIA or AGSL. Once you've discovered the stone that's best for you, shop our wide range of engagement ring settings and metals, including popular platinum styles. If you need help along the way, you may engage with our customer service team or virtual gemologist. Ritani offers free in-store previews of our diamonds and wedding rings at any of our local jeweler partners, located across the United States.