So what are our thoughts on this IS image?

[michael1601999]

I'm trying to acertain if this is a bad image or significant leakage below the crown. The center looks to be light so maybe it's overly backlit? Any opinions overall are appreciated! 3X, SI1 HCA 1.9

 

[diamondseeker2006]

I think it's just a photography/lighting issue. What are the numbers on the stone?

 

[gm89uk]

Looks good, possibly a higher crown 36/40.6 combo with 56/57 table, different flavour of diamond with the skinnier arrows abd proportions but should be a good performer.

 

[bmfang]

Looks like a lighting issue to me with the photo. There is a significant white patch around 7 o’clock.

Nice edge to edge red saturation. This could be a go-er.

 

[Lorelei]

I think it's just a photography/lighting issue. What are the numbers on the stone?

Looks good but as DS says, can you post the numbers for completeness please?

 

[michael1601999]

Wow you guys are good! Thanks all. Proportions below. It also has several twining wisps throughout (hence the SI1)
Depth: 62.4%
Table: 57%
Crown < 36
Pavilion <40.6



Also, what's the impact of a higher crown (if any) and how would it affect if/how this is placed in a halo setting?

 

[the_mother_thing]

I had to look up the ‘FIC’ reference: https://www.diamond-cut.com.au/23_bicfic.htm

 

[diamondseeker2006]

I wouldn't go over 35.5 for crown angle with a 40.6 pavilion angle. Your lower girdle facets appear to be maybe 79-80 because the arrows are very skinny. That stone just gets very good for light return and scintillation and I wouldn't settle for less than excellent on those. Spread is almost always very good on ideal cut stones, though. The other three need to be excellent. I think you can do better, but this is not a bad stone.

These are measurements to help you stay in ideal cut territory with a GIA excellent cut stone.

table: 54-58

depth: 60-62.3

crown angle: 34-35.0 (up to 35.5 crown angle can sometimes work with a 40.6 pav angle)

pavilion angle: 40.6-40.9 (sometimes 41.0 if the crown angle is close to 34)

 

[Maggiemeans]

so I can learn as well.... how do you experts tell the difference between photography issues and light leakage? I would have thought this was leakage under the table.

 

[HappyNewLife]

so I can learn as well.... how do you experts tell the difference between photography issues and light leakage? I would have thought this was leakage under the table.

Yeah, I agree. I would have thought that was too much leakage under the table too