SU1570704A1 - Inset from transparent material - Google Patents

Abstract

The invention relates to the jewelry industry and allows for improving the play of the color of the jewelry insert and increasing the intensity of its color. The insert has a crown, girdle and pavilion. The pavilion has a spherical face at the bottom, the curvature of which is directed toward the girdle. The pavilion and the spherical facet have a mirror coating. The pavilion is made in the form of a ring of side faces formed by the surface of a cylinder with a curvature directed toward the longitudinal axis of the insert. The mirror coating of the pavilion is made on each side face at a height corresponding to the conditional angular size α _II , and the crown is made in the form of a concentric undulating surface. 1 hp f-ly, 3 ill.

Description

The acquisition relates to the jewelry industry, namely, inserts for jewelry such as brooch, earrings, etc.

The purpose of the invention is to increase the color intensity and increase the color play.

FIG. 1 shows the insert, section; in fig. 2 - the same, without a cut; in fig. 3 insert, top view.

The insert consists of a crown 1, girdle 2 and pavilion 3. Pavilion 3

In the lower part it has a spherical face 4 with a curvature directed toward the girdle, i.e. inside the insert. The spherical facet 4 and the pavilion have a mirror coating. Pavilion 3 is formed by a ring of faces 5 formed by cylindrical surfaces. The mirror coating of the pavilion is made on gran x 5. This mirror coating 6 is made up to a height having on the face of the pavilion a conditional angular coordinate of, 7, determined from a system of equations:

SP

vl

"And 180 ° - 2 rft- with / crg

cos о (n (sin "(r- siiWjj) tg (2o / r- 90 °),

where P «p is the shape indicator (for the stack-d r is the angle of the spherical face, deduced Pf 2.0); о / кр1 Uglov coordinate of the above formulas

Nata is the top point of the pavilion face;

  (Pf.- si.Wt-) tg (2 ", .- 90 °),

where o (cr, ts-angular coordinate of the bottom point of the pavilion.

The angular size of face 5 is the angle o, calculated by the formula

   cr w cr t

The crown 1 insert is made in the form of concentric wave surfaces 7.

Claims (2)

1. Insert of transparent material containing a crown, girdle and cosdri co8c .- (Pf- si.no/j- sirWj- sino) tg (2rfj- 90 °), pavilion point points; olt - the angle of the spherical face derived from the formula where L is a conditional indicator of the form; /Kp.j- the angular coordinate of the upper С0Ј5с крц э sin «/ r-sino / krd) tg (2« f, - Wb The corner angle of the lower part of the pavilion face, while the crown is made in the form of a concentric undulating surface.30 fpwi / qa zerml WPff / Tff // p // ffi // t A mirror-coated pavilion with a spherical face in its lower part, the curvature of which is directed toward the girdle, characterized in that, in order to increase the color intensity and increase the color play, the pavilion is made in the form of a ring of side faces, each of which is formed curvature directed in the direction of the longitudinal axis of the insert; the pavilion's mirror coating is made on each of its lateral faces at a height corresponding to the conventional angular size o ($, determined by the formulas cfff-ieO -e pj, 2. The insert according to claim 1, characterized in that the angular size of each side face of the pavilion is an angle / defined by the formula d d cr w - (/ IRGFig1 x // figs