Diamond cut
AssigneeTycoon
InventorToros Kejejian
Life of this patent
Estimating the term…
Abstract
A mixed cut gemstone having a brilliant cut crown, a girdle and a step cut pavilion. The step cut pavilion contains four rib lines running from the girdle to a culet, which can be a line or a point. These rib lines subdivide the pavilion into four sides, which, if the girdle is shaped like a square, are equivalent, and, if the girdle is shaped like a rectangle, then any two opposing sides are equivalent. The pavilion contains a multitude of steps, which add to an elegant and classic look of the gemstone. The crown contains a flat table in a form of a diamond, four corner facets and four upper girdle facets, thus, creating superior factors of dispersion, brilliance and scintillation. The table is slightly elevated due to the angles that the four corner facets and four upper girdle facets form with the girdle.
Claims16
A mixed cut gemstone, comprising:
- a) a pavilion, wherein said pavilion is step cut and comprises
- a multitude of step cuts, where said step cuts are arranged parallel to each other and are spaced;
- a lower girdle facet substantially wider than said step cuts;
- and
- rib lines, wherein said rib lines subdivide said pavilion into parts and end at a culet;
- b) a girdle, wherein said girdle has a length and a width and comprises
- a crown break;
- and,
- a pavilion break;
- and,
- c) a crown where said crown is brilliant cut and comprises
- four corner facets, wherein said corner facets are shaped as triangles;
- four upper girdle facets, wherein said upper girdle facets are shaped as triangles;
- and,
- a table, wherein said table is in the form of a diamond with sides conjoining with said corner facets, and has vertices conjoining with said upper girdle facets.
A mixed cut gemstone comprising:
- a) a pavilion, wherein said pavilion is step cut and comprises
- a multitude of step cuts where said step cuts are arranged parallel to each other and are spaced;
- a lower girdle facet substantially wider than said step cuts;
- rib lines, wherein said rib lines subdivide said pavilion into equal opposite parts and at a culet;
- b) a girdle, wherein said girdle has a length and a width and comprises
- a crown break;
- and,
- a pavilion break;
- c) a crown, where said crown is brilliant cut and comprises
- four corner facets, wherein said corner facets are shaped as triangles;
- four upper girdle facets, wherein said upper girdle facets are shaped as triangles;
- a table, wherein said table is in the form of a diamond with sides conjoining with said corner facets, and has vertices conjoining with said upper girdle facets;
- and,
- d) a table which is substantially one fourth of the area of the base of the crown.
Dependencies are inferred from the claim text.