Ruby Stone Light Grade Inspection System Using CCD Linear Sensor – A Review

Several gemmology technologies, including loupes, microscopes, and dichroscopes, are currently utilised to assist gemstone traders in evaluating rubies. These tools, on the other hand, rely heavily on human vision for pictorial assessment. There are no standardized tools for determining ruby stone grading, other from those that rely on human vision, which can lead to errors. Gemmologists, stakeholders in the precious stone and manufacturing industries, as well as dental applications, would benefit from a standardized quantitative grading valuation of ruby stones. Extensive research is required to analyse the light characteristics of rubies. This paper presents a potential research overview of the Charge-Coupled Device (CCD) linear sensor to inspect the grading value of ruby stone based on its light characteristic. This research delves deeper into the relevant light properties of rubies for grading purposes. Numerous types of gemmological instruments are used for grading and appraising rubies, as well as their applications, are discussed in this paper. A standardized approach for quantitative grading valuation of ruby stones utilising a Charge-Coupled Device (CCD) linear sensor is offered due to the limits of current techniques and the strong demand for superior quality in the high-valued stone sectors.