Method of facetting a gem
Patent 5462474 Issued on October 31, 1995. Estimated Expiration Date: 
May 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2414598 2429961 3534510 3585764 Method for cutting ornamental transparent gemstones and products produced therefrom Method of cutting gemstones and product Working gemstones Apparatus and method for cone shaping the crown and pavilion of gemstones Patent #: 5293858 AbstractA method, and product from the method, of faceting a gemstone in which the facets, when combined with the polishing/non-polishing of the facet form an image such as the Star-of-David. The image is visible when viewed through the table of the gem. On one end of a clear or substantially clear gemstone, a series of facets are made which combine to create lines and boundaries. Through selective polishing of the facets, usually as they are made, some of the facets so created are darker and more visible than the others. These darker facets assist in forming the Star-of-David, or other image, visible through the table of the finished gemstone. | |
