What is a precious stone? A precious stone or gem is also used to make jewellery. Precious stones or gems are multiple and the study and classification requires passion and dedication. In addition to knowledge, instruments are needed to differentiate them.
They can come from three origins: •Geological: rocks and minerals. They are the most numerous as Synthetic star sapphire, emerald, Tanzanite loose stones, Loose sapphire stones and we will talk more in depth. •Vegetable: like amber or jet •Animal: like the pearl and the coral. Once achieved, it is cut, carved and polished to turn it into a precious stone or gem. The science that studies them is called Gemology and the people who work with these stones are gemologists. Mainly, the study consists of learning the chemical, physical and optical properties in order to differentiate them. The properties of precious stones •Rarity: to be natural depend on what nature gives us. All are different, none is equal to another. It is characteristic is undoubtedly the most appreciated and when manufacturing tends to homogeneity. Today a large number of equal parts of a product to make it cheap are to make exclusivity and differentiation is scarce. Rhodolite garnet value is very high. •Hardness: when used in jewellery Best cubic zirconia must have a high hardness. There is a table called Mohs scale where they are classified according to their hardness •Size: It is the form that we give so that the optical properties look. The evolution and quality of the size is evident both in small sizes and of course in large sizes where an exhaustive study is done before proceeding to stoning. There are various sizes such as bright, baguette, princess, goatee, oval, heart ... The craft of carving or stoning is very precise and there is a more traditional methodology prioritizing speed, in which many