We identify three primary visual characteristics of fancy color diamonds:  Inner-Grade, Color Dispersion, and Undertone (IDU). We use grades 1, 2, 3, and 4. Grade 1 being the lowest quality grade and Grade 4+ is the highest possible grade, granted in rare cases and denotes stones with exceptional quality characteristics. Inner-Grade refers to the strength […]

  In recent years, a significant shift has occurred in the way professional diamond dealers, retailers and gem collectors evaluate fancy color diamonds. Unlike in previous years, where buyers and sellers primarily relied on the GIA gemological report, today’s evaluations consider the visual assets and unique characteristics of any fancy color diamond as opposed to […]