Mondiamo offers consumers from around the world a simple and transparent way to sell their diamond jewelry. Leveraging decades of industry knowledge, advanced pricing data analytics, a unique online platform, and a customer-centric approach, Mondiamo is transforming the diamond jewelry buy-back market by empowering sellers to discover the true market value of their diamond with the highest standards of service. Mondiamo is the only diamond buy-back platform recommended by Blue Nile, the world's largest online sellers of GIA certified diamonds.