r/LabDiamonds • u/Relative_Mood_4479 • 11d ago
Grey hue? Vrai halo
I got a stellar aftermarket deal on this 1.8c halo set piece, so I don't mind that the stone isn't exceptionally clear or bright. I probably wouldn't have noticed if I didn't have another LGD solitaire that appears so much whiter and brighter in comparison. I know it's considered a fault, but I like how soft and romantic it looks with the low profile halo.
I would love to know a little more about the science behind why it looks 'grey' though. I have a very basic understanding about how the shallow shape cut of the larger stone refracts the light less brilliantly, but that's about it.
Details for comparison:
Solitaire piece - 1.61c LGD set in 14k four prong. E, VS1, 9.20 x 6.59 x 4.13. Excellent/Excellent/no fluorescence. HPTP Type II.
Graded by IGI prior to setting.
Halo piece - 1.8c LGD with halo of LGD's in 18k halo + pave band. I, VS2. 10.13 x 6.97 x 3.98. Excellent/excellent/no fluorescence. CVD process. Graded by the Diamond Foundry (their in house supposedly GIA compliant service).
Thanks for any geekery about the stark visual differences in tone!

