Composite gemstone and method of production thereof
OwnerYehoshua Mandell, Yosef Abergel +1inventors
InventorsYehoshua Mandell, Yosef Abergel, Joel Kokon
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Abstract
The invention discloses a composite gemstone for use in jewelry, formed of two or more adjacent precious stones, bonded to one another in a permanent manner without use of adhesive. The appearance is that of a single homogenous stone, with high grade optical properties as measured spectroscopically. “Low height” diamonds may be used for forming the composite, when to date such low height diamonds are considered non-profitable for jewelry. A process for the production of such composite gemstones is disclosed.
Claims15
A composite gemstone comprised of an upper precious stone and a lower precious stone, bonded to one another permanently without use of adhesive, wherein said contact points of said upper stone and said lower stone are highly polished;
- wherein the visual appearance is of a single gemstone.
A composite gemstone having two or more precious stones bonded to one another permanently without use of adhesive, produced using the following process:
- a) providing two or more precious stones as a matched set, for use in a single composite stone, wherein said stones are polished and cut to desired geometrical sizes and shapes;
- b) clamping each of said precious stones so as to expose surfaces which will be bonded to adjacent precious stones in said composite;
- and rotating said precious stones at approximately 2000-4000 RPM, while polishing said exposed surfaces of said precious stones;
- c) cleaning said precious stones;
- d) clamping said precious stones and rotating said precious stones at a speed of approximately 500-1500 RPM in opposite rotational orientation;
- contacting said precious stones with one another at a desired orientation until vacuum is sensed;
- halting said rotation;
- thus obtaining a composite gemstone having two or more precious stones bonded together in a permanent manner without use of adhesive.
A process for preparing a composite gemstone having two or more precious stones bonded to one another permanently without use of adhesive, said process comprising:
- a. providing two or more precious stones as a matched set, for use in a single composite stone, wherein said stones are polished and cut to desired geometrical sizes and shapes;
- b. clamping each of said precious stones so as to expose surfaces which will be bonded to adjacent precious stones in said composite;
- and rotating said precious stones at approximately 2000-4000 RPM, while polishing said exposed surfaces of said precious stones;
- c. cleaning said precious stones;
- d. clamping said precious stones and rotating said precious stones at a speed of approximately 500-1500 RPM in opposite rotational orientation;
- contacting said precious stones with one another at a desired orientation until vacuum is sensed;
- halting said rotation;
- thus obtaining a composite gemstone having two or more precious stones bonded together in a permanent manner without use of adhesive.
Dependencies are inferred from the claim text.