Abstract: A ring including a shank having platforms at predetermined locations on an outer surface of the shank, where the platforms identify preferred positions for setting gemstones.

Abstract: A ring including a shank having platforms at predetermined locations on an outer surface of the shank, where the platforms identify preferred positions for setting gemstones.

Abstract: A ring including a shank having platforms at predetermined locations on an outer surface of the shank, where the platforms identify preferred positions for setting gemstones.

Abstract: A method of augmenting a ring including the steps of: receiving the ring having markings on the inner surface thereof, creating a setting having a size and position defined by at least one of the markings, and placing a gemstone in the setting. The locations of the markings are determined by considering various factors, including the inner shank circumference, the number of gemstone sizes, and the number of non-marking areas.

Abstract: A ring including a shank having platforms at predetermined locations on an outer surface of the shank, where the platforms identify preferred positions for setting gemstones.

Abstract: A ring including a shank having indicators at predetermined locations on an inner surface of the shank, where the indicators identify preferred positions for setting gemstones. The preferred positions may be based on the number of and sizes of the gemstones and/or on a predetermined pattern.

Abstract: A mixed cut gemstone comprising a girdle, a crown above the girdle and a pavilion below the girdle. The crown has a girdle break, a table break and a table. The table break is cut with triangular shaped facets and the girdle break is cut with triangular and quadrilaterally shaped facets. The present invention also describes a pavilion having a width and a length formed by two pairs of opposing pavilion sides and four pavilion corners. The pavilion is composed of four steps including: a first step descending from said girdle to a first step facet junction, a second step descending from said first step facet junction to a second step facet junction, a third step descending from said second step facet junction to a third step facet junction, and a fourth step descending from said third step facet junction to said culet. This mixed cut gemstone enables the appreciation of the desirable characteristics of a diamond in ways that prior art cuts do not allow.