The Round cut.
Light becomes brilliant.

The round brilliant cut is the most classic diamond cut,
and has been loved since it first appeared.
It is so widespread that “round brilliant cut” and “diamond” are sometimes
used interchangeably
Indeed, the “round brilliant cut” cut identifies the
round cut of any precious stone. It is characterized by 57 facets.
The angles and proportions of the facets highlight the
brilliance and fire of the gem to the greatest effect.
The round brilliant cut
has been fascinating people with its light and charm since 1600