FIELD: personal and household objects.
SUBSTANCE: oval cut diamond includes a girdle which has a contour line with the shape of an oval or closer to oval, a crown above the girdle, which has an octagonal tablet facet at the top of the crown, and a pavilion below the girdle. Such a diamond is a modified oval cut diamond, in which the crown and pavilion are turned a sixteenth of the value of the complete angle about their central axis compared to the common brilliant cut diamond. The girdle has ratio (b/a) of the short radius to the long radius of 0.6 or more. In the girdle, the radius in the direction of the long axis is denoted by "a", and the radius in the direction of the short axis is denoted by "b". The pair of main pavilion facets, lying opposite each other about the central axis, has a pair of main crown facets or star-shaped facets, lying opposite pairs of main pavilion facets through the girdle. Two main pavilion facets, two main crown facets or star-shaped facets or tablet facets have a common vertical plane within the limits of the facets.
EFFECT: glitter from the tablet facet or crown facet is amplified.
8 cl, 23 dwg, 2 tbl, 3 ex
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