Invention Grant
- Patent Title: Cushion cut gemstone with excellent optical brilliance
- Patent Title (中): 缓冲切割宝石具有出色的光学亮度
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Application No.: US14138805Application Date: 2013-12-23
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Publication No.: US09265311B2Publication Date: 2016-02-23
- Inventor: Hertz Hasenfeld , Zyshe Lorincz
- Applicant: Hasenfeld-Stein, Inc.
- Applicant Address: US NY New York
- Assignee: HASENFELD-STEIN, INC.
- Current Assignee: HASENFELD-STEIN, INC.
- Current Assignee Address: US NY New York
- Agency: Arent Fox LLP
- Main IPC: A44C17/00
- IPC: A44C17/00

Abstract:
A gemstone including a substantially rectangular girdle with rounded corners, a crown extending in a first direction from the girdle, and a pavilion extending in a second direction from the girdle opposite the first direction. The gemstone has 69 uniquely arranged and angled facets, 41 of which are in the crown, and 28 of which are in the pavilion. The height of the crown is preferably between 12 to 19½% of the width of the stone, the total depth of the stone is preferably between 58-68% of the width of the stone, and the width of the table is preferably between 55-65% of the width of the stone.
Public/Granted literature
- US20150173469A1 CUSHION CUT GEMSTONE WITH EXCELLENT OPTICAL BRILLIANCE Public/Granted day:2015-06-25
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