My stone rated "excellent" in fire and brilliance, but only "very good" on scintillation. HCA was 1.6. What do you all make of this? How bad is this? How bad can scintillation get with that score? Is this a "deal-breaker" for anybody? The stone has perfect symmetry i.e. H&A. It''s really the only thing wrong, but was a very expensive stone!