These are most highly prized gemstones except Pearl, and have a particular cut. There are two ways of cutting stones.
Producing a doomed, polished surface, as a simple style for stones is called cabochon cut. Star Sapphires and Cat’s Eyes are the two examples for this cut.
Gemstones are cut to give them a flat surfaces to enhance their beauty, is called faceting. These facets are absorbed and reflect light rays to give the gemstone the best lustre.
Reflecting light rays produced more beautiful gemstones.