Title:
【発明の名称】カットされたコ―ナ―部を有する正方形の混合カットの宝石
Document Type and Number:
Japanese Patent JP3056741
Kind Code:
B2
Abstract:
A cut cornered mixed-cut square gemstone comprises a step-cut crown, with two steps and a table, a girdle and a pavilion. The crown and pavilion are substantially square with four equal sides, and corners about 1/3 the length of the sides. The pavilion sides and corners are defined by eight rib lines which extend substantially continuously from the girdle to a culet. Each pavilion side and corner has four facets, including a lower girdle star facet, two lower girdle facets and a lower bezel facet. The gemstone has the classic elegance of a step cut in the crown and attempts to achieve the good dispersion of a brilliant cut in the pavilion.
Inventors:
Robert S. Grief
Application Number:
JP25343999A
Publication Date:
June 26, 2000
Filing Date:
September 07, 1999
Export Citation:
Assignee:
Tiffany, And, Company
International Classes:
B28D5/00; A44C17/00; B24B9/16; (IPC1-7): A44C17/00
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)