Wanted to thank the wonderful PS community for its help and education. From my interactions here and the information shared, I was able to down-select to 2 diamonds, from which I need to chose a winner this week.
I will share the color and clarity specs later but, first, I wanted to get the group's opinions on cut / performance:
Stone 1
Shape: Cushion Brilliant (8 main)
Size: 7.5^2
Stone 2
Shape: Cushion Modified Brilliant (4 main)
Size: 7.3^2
Stone 2 (ASET below) is bright, very bright, in all lighting environments. Even in very poor lighting, the perimeter of the stone is well-defined. The facets turn on and off, toggling between shades of white (vs. black to white) but the facet structure is clear & defined and not lost, as it often is in crushed ice stones.
By comparison, Stone 1 appears darker; however, it has chunkier facets and shows more rainbow. This stone appears to have more depth & complexity and reminds me of a very lively asscher. It's perimeter fades, with the stone losing shape in low lighting but the flashes continue.
To illustrate the illumination / reflection differences, in the dark, I walked backward from a lit room until both stones dissappeared. Stone 1 dissappeared 1/2 way along this path.
Stone 2's sparkles are smaller but more abundant.
Experts, please advise. I understand that 8 mains are relatively rare and sought after. Please disregard this in your assessment. My bride-to-be will have no appreciation for rarity. I simply want to get her the stone that will perform "the best" -- however this concept is defined.
Thank you again for the invaluable assistance.

I will share the color and clarity specs later but, first, I wanted to get the group's opinions on cut / performance:
Stone 1
Shape: Cushion Brilliant (8 main)
Size: 7.5^2
Stone 2
Shape: Cushion Modified Brilliant (4 main)
Size: 7.3^2
Stone 2 (ASET below) is bright, very bright, in all lighting environments. Even in very poor lighting, the perimeter of the stone is well-defined. The facets turn on and off, toggling between shades of white (vs. black to white) but the facet structure is clear & defined and not lost, as it often is in crushed ice stones.
By comparison, Stone 1 appears darker; however, it has chunkier facets and shows more rainbow. This stone appears to have more depth & complexity and reminds me of a very lively asscher. It's perimeter fades, with the stone losing shape in low lighting but the flashes continue.
To illustrate the illumination / reflection differences, in the dark, I walked backward from a lit room until both stones dissappeared. Stone 1 dissappeared 1/2 way along this path.
Stone 2's sparkles are smaller but more abundant.
Experts, please advise. I understand that 8 mains are relatively rare and sought after. Please disregard this in your assessment. My bride-to-be will have no appreciation for rarity. I simply want to get her the stone that will perform "the best" -- however this concept is defined.
Thank you again for the invaluable assistance.
