It is very difficult to distinguish natural pearls from cultured pearls due to their similarity in appearance, and their specific weight is used for this purpose. The specific weight of natural pearls is usually less than 2.73, while the specific weight of most cultured pearls is higher than the above figure (of course, not all of them).

Natural original pearls have a special glow and by turning the Pearl string in the light, original pearls have ambient reflection, but sometimes low-quality pearls do not have the shine they should, and in this case, other methods should be considered for detection. Cultured pearls show a luminescence phenomenon under ultraviolet light, which is usually yellow in color and has a green glow in X-ray light.

Cultured or cultured pearls are created in an interesting way. The pearl cultivator places a small amount of Sand between the shell and the soft shell of the fish. After 2 or 3 years, the cultured pearl can be extracted by breaking the shell. The only difference between cultured pearls and natural pearls is that these pearls do not have a perfect appearance. But the country of Japan has been able to create cultured pearls that are completely similar to natural pearls by placing sand particles right in the shell.

Regarding artificial pearls, it can be said that this model of pearls is made from hollow crystal grains. in such a way that they Paint their insides with a substance made from the transparent and shiny scales of some fish. Then the inside of these spheres is filled with wax and with this method artificial pearl seeds are created. These pearls look so natural and beautiful that sometimes it is very difficult to distinguish them from the original pearls. It is interesting to know that today, China, by entering the pearl market and producing a large volume of artificial pearls, has caused serious damage to the natural pearl fishing industry in the Persian Gulf.