Shop our stunning selection of Cushion Cut diamonds, perfect for a diamond engagement ring or pendant. Once you've selected your diamond, take the next step and pair it with a engagement ring setting and metal of your choice, from gleaming platinum to romantic rose gold. You can trust that our loose diamonds are certified and responsibly sourced; each one comes with a detailed AGSL or GIA grading report. For expert advice on your purchase, consult our non-commissioned virtual gemologist service or our stellar customer service team. Once you've chosen your stone and built your one-of-a-kind engagement ring, you can preview it obligation-free at one of our many local jeweler partners.