| 摘要 |
The present invention relates to a gemstone comprising a girdle, a crown, and a pavilion. The crown has a table, ten star facets surrounding the table, ten bezel facets aligned between the star facets, and twenty upper girdle facets aligned between the bezel facets. The pavilion is provided with ten pavilion main facets, twenty pavilion hook facets aligned between the pavilion main facets, and ten pavilion star facets aligned between the pavilion hook facets. |
| 主权项 |
1. A diamond, comprising:
a girdle; a crown extending in a first direction from the girdle, the crown comprising:
a table,ten star facets surrounding the table, andten bezel facets aligned between the star facets and twenty upper girdle facets aligned between the bezel facets; and a pavilion extending in a second direction from the girdle, opposite the first direction, the pavilion consisting of:
ten pavilion main facets extending concentrically from a point of the pavilion distant from the girdle and formed at an angle between 40.75° and 41.50° relative to a plane parallel to a horizontal plane of the girdle,twenty substantially triangular pavilion hook facets aligned between the pavilion main facets and formed at an angle between 41.50° and 42.25° relative to a plane parallel to a horizontal plane of the girdle, wherein each of the pavilion hook facets is adjacent to, and forms a common edge with another pavilion hook facet to form a pair of pavilion hook facets, and each of the pair of pavilion hook facets is aligned between two adjacent pavilion main facets, andten substantially triangular pavilion star facets aligned between the pavilion hook facets and formed at an angle between 45.75° and 46.50° relative to a plane parallel to a horizontal plane of the girdle, wherein the pavilion star facets are aligned around periphery of the pavilion and each pavilion star facet includes a first side forming a first common edge with a side of a first pavilion hook facet of the pair of pavilion hook facets and a second side forming a second common edge with a side of a second pavilion hook facet of the pair of pavilion hook facets. |
