
Neither. They are equal indicators of predicted beauty. This is a common misconception, explained in small print on the HCA results page: “A score below 2 (Excellent) means you have eliminated known poor performers (more than 95% of all diamonds). Your own personal preference may be for a diamond with an HCA score of 1.5 more rather than one with a lower score of say 0.5.”
For more specific questions ask our experts