This cutting style is gaining popularity over the recent years.
In the colored gemstone world it is one of the most common cuts.
It is a twist on the classical round brilliant cut.

In total this cut has 58 facets of which 24 on the pavilion and 32 on the crown. Just like an emerald and marquise cut this narrow shape will be slimming on your finger.
This could create the illusion of making the stone bigger than it actually is.