Gemstone
AssigneeContinental Jewelry (USA) Inc.
InventorNai Yan Cheng
Life of this patent
Estimating the term…
Abstract
A gemstone includes a crown portion and a girdle portion abutting the crown portion and extending along a predetermined plane. The crown portion has a plurality of crown facets provided on a surface thereof. The crown portion and the girdle portion each have eight longitudinal sections. At least one of the eight longitudinal sections of the crown portion have a first facet of the crown facets having a first edge bordering the girdle portion, and a second facet of the crown facets having a second edge bordering the girdle portion. A particular portion of the first edge abuts the second edge at a particular location. The first and second edges curve toward a center of the gemstone which is provided on the particular plane. The particular location is closer to the center of the gemstone than another portion of the first edge.
Claims18
A gemstone, comprising:
- a crown portion including a plurality of crown facets provided on a surface thereof;
- and
- a girdle portion abutting the crown portion and extending along a predetermined plane,
- wherein the crown portion and the girdle portion each have eight longitudinal sections,
- wherein at least two sections of the eight longitudinal sections of the crown portion each include a respective first facet of the crown facets having a first edge bordering the girdle portion and a respective second facet of the crown facets having a second edge bordering the girdle portion,
- wherein a first portion of the first edge abuts the second edge at a particular location,
- wherein at the particular location, the first and second edges curve toward a center of the gemstone which is provided on the predetermined plane, and
- wherein the particular location is closer to the center of the gemstone than a second portion of the first edge.
A gemstone, comprising
- a crown portion including a plurality of crown facets provided on a surface thereof;
- and
- a girdle portion abutting the crown portion and extending along a predetermined plane,
- wherein the crown portion and the girdle portion each have eight longitudinal sections,
- wherein at least two sections of the eight longitudinal sections of the crown portion each include a respective first facet of the crown facets having a first edge bordering the girdle portion and a respective second facet of the crown facets having a second edge bordering the girdle portion,
- wherein a first portion of the first edge abuts the second edge at a particular location,
- wherein the first and second edges curve toward a center of the gemstone which is provided on the predetermined plane, and
- wherein the particular location is closer to the center of the gemstone than a second portion of the first edge and a second portion of the second edge.
A gemstone comprising,
- a crown portion including a plurality of crown facets provided on a surface thereof;
- and
- a girdle portion abutting the crown portion and extending along a predetermined plane,
- wherein the crown portion and the girdle portion each have at least five lobes, and
- wherein at least two neighboring ones of the lobes of the crown portion each include at least two distinct facets which contact the girdle portion.
A gemstone, comprising:
- a crown portion including a plurality of crown facets provided on a surface thereof;
- and
- a girdle portion abutting the crown portion and extending along a predetermined plane,
- wherein the crown portion and the girdle portion each have eight longitudinal sections,
- wherein at least one of the eight longitudinal sections of the crown portion includes a first facet of the crown facets having a first edge bordering the girdle portion and a second facet of the crown facets having a second edge bordering the girdle portion,
- wherein a first portion of the first edge abuts the second edge at a particular location,
- wherein at the particular location, the first and second edges curve toward a center of the gemstone which is provided on the predetermined plane,
- wherein the particular location is closer to a center of the gemstone than a second portion of the first edge, and
- wherein at least three of the crown facets border the particular location.
A gemstone, comprising:
- a table portion;
- a crown portion including a plurality of crown facets provided on a surface thereof;
- and
- a girdle portion abutting the crown portion and extending along a predetermined plane,
- wherein the crown portion and the girdle portion each have at least five lobes, and
- wherein at least one of the lobes of the crown portion includes at least one facet which contacts the table portion and the girdle portion.
Dependencies are inferred from the claim text.