MUMBAI, India, Nov. 7 -- Intellectual Property India has published a patent application (202517060310 A) filed by De Beers Uk Ltd., London, on June 24, for 'optical characterisation of a gemstone.'
Inventor(s) include Suganthan, Shan; Bodhinayake, Sud; Felix, James; Powell, Graham; Lanigan, Peter; and Nikiforov, Ivan.
The application for the patent was published on Nov. 7, under issue no. 45/2025.
According to the abstract released by the Intellectual Property India: "An optical characterisation method of a gemstone is provided, the gemstone being at least partially transparent at a first wavelength of light and at a second wavelength of light. A first step of the method comprises illuminating the gemstone with diffused light at the firs...