This e-book, entitled “Exploring Ruby Stone Optical Properties with CCD Tomography System” discusses the conceptual modelling of CCD Tomography System to analyse the optical properties of ruby stones. Tomography is a method for generating detailed images of the internal structures of an object or body. It involves capturing several slices or cross-sections from different angles, which are then assembled to form a complete picture. This e-book describes the modelling methods used to create a conceptual framework for evaluating the optical properties and valuing ruby stones using CCD tomography. It offers an in-depth exploration of mathematical modelling and image reconstruction techniques that aid in determining ruby clarity. This work provides important insights for researchers and professionals in the optoelectronics field. This research represents a significant advancement in gemmology, particularly within the jewellery sector, by offering new insights and innovations that could revolutionize how gemstones are evaluated and appreciated.