Goldway Technology Limited

Kong Chan

Koon Chung Hui

Ka Wing Cheng

Juan Cheng

Wing Chi Tang

Kin Wing Wong

Yau Chuen Yiu

Chun Hong Sham

A process for determining the type of a diamond having spin properties and physical properties, said process including the steps of: (i) determining the spin properties of a diamond of unknown type, using optically detected magnetic resonance to measure the spin properties of said diamond of an unknown type, wherein the spin properties are indicative of the physical properties of the diamond; (ii) comparing the spin properties of said unknown diamond with the spin properties of a plurality of diamonds of known types; and (iii) determining the type of said diamond of unknown type upon a predetermined threshold of correlation between the spin properties of said diamond of unknown type with the spin properties of a diamond of known type of said plurality of diamonds known types.

Process for determining the type of a diamond

A process operable using a computerized system () grades the clarity of a diamond () as a function of internal defects within its body (). The computerized system () includes an optical image acquisition device (), a processor module () and an output module () operably interconnected together. The process includes the steps of (i) acquiring via an optical image acquisition device () a plurality of top view images of a diamond (); (ii) in a processor module (), detecting defects within the body of the diamond (); and (iii) from an output module (), providing a signal indicative of the clarity grade assigned in (ii).

Diamond clarity measurement process and system

A computerized system for grading the colour of a diamond, wherein the colour of the diamond is graded based on a predetermined threshold of correlation of colour of a diamond with the colour of a diamond of a plurality of diamonds each having a colour grading assigned thereto, the computerized system including: an optical image acquisition device for acquiring at least a first optical image of a diamond, wherein the first optical image is acquired at a predetermined angle of inclination to the central axis extending normal to the table and through the apex of the pavilion of the diamond and in a direction of towards the table and wherein the first optical image is acquired in an environment having a predetermined constant light level; a processor module for comparing data derived from acquisition of the at least a first optical image with a plurality of data sets each of which corresponds to a diamond of a plurality of diamonds, wherein data sets are each derived from an optical image acquired by an optical image acquisition device in an environment having a predetermined constant light the same as that as (i) and each of the data sets is assigned a colour grading, and wherein said data derived from acquisition of the at least a first optical image and the data of said data sets is data indicative of the colour of the diamond from which it is acquired; and an output module, for responsive to a predetermined threshold of correlation between the data derived from input of the first optical image and one of the plurality of data sets, providing an output signal indicative of the colour grade of the diamond.

Colour grading process and system for diamonds

Growing community of inventors

Hong Kong, China

Kong Chan