The crown is the part of a cut stone above the girdle. On a standard round brilliant it has 33 facets: the table, 8 stars, 8 bezels and 16 upper halves.
In more detail
Light enters mostly through the crown and leaves through it again. On the way out, the sloped crown facets bend each color by a different amount. That spreads white light into fire.
On a grading report
Described on the proportion diagram by the crown angle and the crown height.
Related terms
- Table: The table is the large flat facet on top of a cut stone, an octagon on a round brilliant. Much of the light enters through it.
- Crown angle: The crown angle is the slope of the bezel facets, measured against the plane of the girdle.
- Crown height: Crown height is the height of the crown, from the girdle to the table. It is a percentage of the average diameter.
- Star facet: Star facets are the 8 small triangular facets of a round brilliant's crown that touch the table.
- Bezel facet: Bezel facets are the 8 large four-sided facets on the crown of a round brilliant. They run from the table to the girdle.
- Upper half facet: Upper half facets are the 16 small triangles along the crown edge of a round brilliant. There are two between each pair of bezels.