Jewelry – Body member encircling ornament – Ring
Patent
1996-07-31
1999-02-09
Nguyen, Kien T.
Jewelry
Body member encircling ornament
Ring
63 32, A44C 900, A44C 1700
Patent
active
058680080
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an ornament such as a ring or pendant having a gem, e.g., a diamond.
Jewelry ornaments including rings and pendants are made precious and valuable by including diamonds and other gems.
A diamond is one of the most popular gems and its quality is graded by the factors of color, clarity (or inclusions), cut (polishing) and weight (measured in karats). If a diamond contains a significant amount of impurities or flaws, it is graded for industrial use. The cut is commonly a 58-facet brilliant cut. FIG. 9 illustrates a faceted diamond including a pavilion vertex 11, a crown 12, a table 13, and a pavilion 14. The pavilion 14 has a cutlet provided at the vertex thereof. Natural diamonds rarely are pure crystal, pink or blue in color. Such highly graded colored diamonds are precious and admirable and will thus be enormously expensive.
It is understood that if low grade, inexpensive diamonds having a brown or yellow tint are successfully turned to pink or blue in color or to clear transparency, their value is increased and they may be used as jewelry. Techniques have been introduced for turning low grade, yellowish colored diamonds to other favorable colors by exposing them to radioactive rays. However, radioactive-ray tinted or industrially treated diamonds are classified as non-natural gems and fail to be accompanied by written certifications which are essential for marketing.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a jewelry ornament including a precious stone or gem that is not artificially treated but that is backed by a colored material for correction of its original color so that it appears to have a higher graded color.
In accordance with the present invention, a jewelry ornament includes a transparent or semi-transparent gem and a colored back-up material disposed behind the gem. The colored back-up material may be a colored gem. The gem may be a polished diamond, and the colored back-up material may be disposed directly beneath the vertex of a pavilion of the diamond. The colored backup material may have a recess provided therein and the pavilion vertex of the diamond may be fitted into the recess. The diamond may be spaced by a small gap from the colored back-up material. The gap between the diamond and the colored back-up material may be filled with a transparent or semi-transparent material. Also, the transparent or semi-transparent material may be applied about a joint between the diamond and the colored back-up material.
Since the jewelry ornament includes the colored back-up material disposed behind the transparent or semi-transparent gem, when the jewelry ornament is viewed from the front (i.e., from the direction denoted by the arrow in FIG. 9), it appears to have a hue imparted by the color of the back-up material and does not appear to have its original color. Since any desired colored gem may be used as the colored material, the combination of the two stones provides an improved appearance.
When the colored back-up material is disposed directly beneath the pavilion vertex of a polished diamond, when the jewelry ornament is viewed from the front, its diamond appears to have a hue affected by the color of the back-up material and is corrected from its original color. Similarly, when the pavilion vertex of the polished diamond is fitted with into the recess provided in the colored back-up material, when the diamond is viewed from the front, it appears to have a hue affected by the color of the back-up material and is corrected from its original color.
Also, when a gap is provided between the pavilion vertex of the diamond and the colored back-up material, when the jewelry ornament is viewed from the front, the diamond appears to have a hue affected by the color of the back-up material and is substantially corrected from its original color. When the gap provided between the pavilion vertex of the diamond and the colored back-up material is filled with the transparent or semi-transparent material, th
REFERENCES:
patent: 2596965 (1952-05-01), Troy
patent: 4878364 (1989-11-01), Freilich
patent: 4936115 (1990-06-01), Mesica
patent: 5323300 (1994-06-01), McCrary
patent: 5664440 (1997-09-01), Roemer
Nakata Tatsuo
Ueki Kazuhide
Yamaura Hiroyoshi
Nguyen Kien T.
Yamaura Hiroyoshi
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