What do you call this cut?

[beaujolais]

What do you call the cut on the white zircon in this photo? Thanks.

 

[beaujolais]

another

 

[OreoRosies86]

It almost looks like concave.

 

[marymm]

Just a guess, but I seem to recall that it is called "diamond cut" - I guess meaning it is cut with the traditional 58-facet round brilliant design used on diamonds - as compared to the more usual modified round brilliant or mixed cut designs used for colored gemstones?

 

[LoversKites]

There are a few variations of the round cut that I have heard of: Round standard, round brilliant, diamond and round concave.

Not sure if it fits into one of those. Anyone know any others?

 

[RTFrog]

The cut reminds me of this: Bicentennial Brilliant