Hearts On Fire center diamond quality begins at J | SI1. Pricing may vary and can change based on diamond availability, color, clarity, and carat weight. Our Perfection Stylist can work with you to choose a perfectly cut diamond that's right for you. We offer a broad range of carat weights to meet your needs. At Hearts On Fire, we hand select natural rough diamonds with impeccable characteristics and create diamond jewelry that consistently earns the highest industry evaluations.