Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
GEMSTONE
Document Type and Number:
WIPO Patent Application WO/2018/061157
Kind Code:
A1
Abstract:
This gemstone is provided with: a crown (100) comprising a table (110) and a plurality of bezel facets (130); and a pavilion (200) comprising a culet (210) and a plurality of main facets (220). A girdle (300) is formed between the crown (100) and the pavilion (200). The gemstone is characterized in that: the direction (A) of the horizontal component of the direction of inclination of the bezel facets (130) from the table (110) to the girdle (300) is set to be different from the direction (B) of the horizontal component of the direction of inclination of the main facets (220) from the culet (210) to the girdle (300); and the angles of inclination of the bezel facets (130) and the main facets (220) are set so that light that enters the table (110) is reflected by two of the main facets (220) and emitted from a bezel facet (130).

Inventors:
KOGANEI, Hiroyuki (1F, Mitsuhashi Park Building, 5-43-1, Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
SHIRAISHI, Shu (8-10, Ginza 3-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
KOGANEI, Tsubasa (1F, Mitsuhashi Park Building, 5-43-1, Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
Application Number:
JP2016/078909
Publication Date:
April 05, 2018
Filing Date:
September 29, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GEM S.T.S. CO., LTD. (8-10, Ginza 3-chome Chuo-k, Tokyo 61, 〒1040061, JP)
International Classes:
A44C17/00
Foreign References:
EP2179672A12010-04-28
JP2006218163A2006-08-24
JP3643541B22005-04-27
JP5443022B22014-03-19
Attorney, Agent or Firm:
TSUJITA, Tomoko (8F Queen's Tower A, 2-3-1, Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 08, 〒2206008, JP)
Download PDF: