Methods, systems, and media for rating and analyzing diamonds are provided. In some embodiments, the method comprises: receiving, from a user device, a selection of a diamond from a plurality of diamonds; in response to receiving the selection of the diamond, receiving at least one image of the diamond and a plurality of ratings corresponding to the diamond; calculating an eye-cleanliness score corresponding to the diamond that indicates a clarity of the diamond when viewed without magnification and a brilliance score corresponding to the diamond that indicates an amount of light reflected through the diamond based on the at least one image of the diamond and at least one rating of the plurality of ratings corresponding to the diamond; and causing a user interface to be presented on the user device indicates the eye-cleanliness score and the brilliance score.

The invention discloses a symmetrically cut gemstone of princess cut (FIG. 1) or cushion cut (FIG. 8) which visually encompassing a heart shape (Z1) within and its method of manufacture. The gemstone has a lower pavilion with a plurality of pavilion facets which emerge upwardly from the culet and are arranged around the pavilion surface on either side of a axis line (C) (FIG. 3, 10). The pavilion facets are symmetrical to the corresponding pavilion facets across the axis. The pavilion facets comprise of triangoid facets (L), chevron facets (M,N) and pavilion main facets, all at specific angles in relation to each other. The pavilion main facet (O) is kite shaped, with short sides (P) converging at the culet, long sides (Q) at 1.sup.st points (R) at a girdle depth of 70 to 86% and the long and short sides at 2.sup.nd points (S) at a girdle depth of 88% to 95%; Pairs of pavilion short half facets (T) are faceted from chevron facets (M,N), and alternate the sides of the pavilion main facets (O) and are formed along a cable (RR) joining the 1.sup.st points. The gemstone is angled at 1st pavilion short half angles (Y) at the girdle depth of 1st point, and are 15 to 30 less than the Triangle main angle (W), and 2 to 9 less than the chevron angles (X,X1). The 1st pavilion short half angles (Y) along the cable of alternate pairs of chevron facets have a variance of 0.05 to 9; (FIG. 5,5a, 11, 11a). The 1.sup.st common interphase of the pavilion short half facets intersects (R) the cable; 2.sup.nd pavilion short lower half angles (Z) around the gemstone at the girdle depth of the 2.sup.nd point, are 0.25 to 8 less than 1.sup.st pavilion short half angles (Y); The angular variance along 2.sup.nd common interphase between pavilion main facets (O) and the adjacent pavilion short half facets (T), is 0.05 to 9, and at the short side interphase of adjacent pavilion main

A support device for transferring at least part of the weight of an earring from an earlobe to a part of the ear that comprises cartilage, the device comprising a first portion (P1) capable of being attached to the earlobe and a second portion (P2) protruding from the first portion and capable of, when the first portion is attached to the earlobe, extending from the earlobe to attach to the part of the ear comprising cartilage.

Embodiments of the disclosure provide a gemstone, jewelry piece, and method for faceting a gemstone. The gemstone, includes: a top portion having a spheroidal surface, the spheroidal surface acting as a refractive surface for light incident on the top portion of the gemstone and focal point lens originator; and a bottom portion shaped as a cone, the cone acting as a light axis to form a focal point on a reflective surface at a base of the gemstone.

The invention relates to a method for partially coating a surface of an object, comprising the following steps: (a) optional hydrophobization of the surface of the object; (b) partial application of (b1) a liquid and subsequent application of a powderous or granular substance or (b2) a solution or suspension of said powderous or granular substance in a liquid; (c) drying the surface to form spatially-delimited salt or powder crusts; (d) coating the surface with at least one layer of a metal or a metal compound; and (e) removing the salt or powder crusts that have been produced. The invention also relates to products that have been produced according to the claimed method.

A jewelry head for mounting a precious or semi-precious gem to an article of jewelry, the jewelry head having a ferrimagnetic body with an inner cavity configured to accept a precious or semi-precious gem; and a near field communication circuit having a near field communication chip electrically connected to an antenna, where the antenna is wrapped around and against the ferrimagnetic body.

The jewelry member according to the present disclosure includes: a plurality of spherical bodies that are three-dimensionally arranged regularly and include an amorphous silicic acid; and a resin that is located in a gap among adjacent spherical bodies of the plurality of spherical bodies and includes a fluorescent dye.

The jewelry member according to the present disclosure includes: a plurality of spherical bodies that are three-dimensionally arranged regularly and include an amorphous silicic acid; and a resin that is located in a gap among adjacent spherical bodies of the plurality of spherical bodies and includes a fluorescent dye.

A gemstone includes a crown, a pavilion, and a girdle disposed between the crown and the pavilion. The girdle has a pear-shaped cross-section with a rounded end a tapered end narrower than the rounded end. The surface of the gemstone is generally divided into a number of groups of interlocking facets disposed at a variety of angles. The groups of facets comprising the surface of the crown generally include star facets, upper intermediate crown facets, lower intermediate crown facets, main crown facets, and upper girdle facets. The upper girdle facets generally abut an upper edge of the girdle. The groups of facets comprising the surface of the pavilion include culet-adjacent facets, candle facets, main pavilion facets, and lower girdle facets. The lower girdle facets generally abut a lower edge of the girdle.

A gemstone includes a crown, a pavilion, and a girdle disposed between the crown and the pavilion. The girdle has an octagon-shaped cross-section. The surface of the gemstone is generally divided into a number of groups of interlocking facets disposed at a variety of angles. The groups of facets comprising the surface of the crown generally include star facets, upper intermediate crown facets, lower intermediate crown facets, main crown facets, and upper girdle facets. The upper girdle facets generally abut an upper edge of the girdle. The groups of facets comprising the surface of the pavilion include culet-adjacent facets, candle facets, main pavilion facets, and lower girdle facets. The lower girdle facets generally abut a lower edge of the girdle.