Why do our customers love two carat halo diamond rings so much? The frame of diamonds that makes the halo engagement ring so stylish also makes the center diamond look much larger, increasing the sparkle and brilliance that make diamonds so mesmerizing. For the best value in a two carat halo diamond ring, first buy the loose two-carat diamond. Using ROSI, our innovative diamond-picking artificial intelligence makes it easy to find the best possible balance of quality and value for your budget. Then create the perfect ring. At RockHer we’ll craft your ring from scratch in California in recycled gold or platinum to fit your diamond (and your finger) perfectly. Making your one of a kind ring to order results in the best possible quality.