Cost: $2,980 ??

WhiteFlash has an 0.55ct AGS 0 H&A with a Cut Advisor rating of 0.5 (F, VS2, polish & symetry EXC) for $2,323??

40.9-pavilion angle is a critical factor. Look at Q-factor diagram and you’ll see what I mean.

I doubt that one would be able to see a difference with unaided eye though – this is more as theoretical issue. The difference in the light return can be within 1%.

In my opinion, once you confirmed that diamonds are scoring less than 2, I would forget about HCA and take other factors into account like PRICE, COLOR (big difference btw), your own PREFERENCES (e.g. Mercedes or Rolls-Royce), the way you see each stone and so on.

Obviously both diamonds are the masterpieces. It is up to you to decide which one you like the most.

I would jump at the EightStar.

There are factors in cutting that are not taken into consideration in the cut adviser. EightStars are cut differently than other diamonds and are unique.

The more time they spent going back to the store (these guys went over and over) and examining the EightStar, the more they came to appreciate it and bought lower colors. I have also read that some like the fire in those warmer colors better. It's all personal preference.

For some it may be like paying for VVS1-you can't see the difference between it and VS1 or maybe even SI1, so there's no need to pay for it unless the idea of having a certain color or clarity is really meaningful for you.

Just my observations.