Pearls are round pearls formed by the shellfish in the sea or fresh water, which are stimulated by the friction between the body and foreign objects, so that the endocrine pearl liquid wraps the foreign objects layer by layer.
The so-called fake pearls and pearls refer to artificial substitutes, such as wax filled glass beads, solid glass beads or coated glass beads.
An effective method for identifying true and false pearls
Intuitive method: directly observe the color, shape, size and luster of pearls with the naked eye. If it is a real pearl, its color, shape and size are inconsistent (the real pearl strung into a necklace or bracelet is selected, so its size is more uniform), while the artificial pearl is the opposite. Real pearls can show an uneven rainbow, while fake pearls have a single tone.
Feeling method: touch the real pearl with your hand to feel cool; More importantly, grasp a pearl with both left and right hands to make it rub against each other. Real pearls have a sense of sand (roughness) and artificial pearls have an obvious sense of smoothness.
Magnifying glass observation method: observe with a 5x or 10x magnifying glass, and its growth lines can be seen on the surface of real pearls (including natural pearls and cultured pearls), as if sand dunes were blown by the wind; Artificial beads can only see eggshell like coating.
Knife scraping method: scraping on the surface of real pearls with a knife or scissors will only drop some powder; Scraping on the artificial coated beads will scrape a layer of film to reveal the true face of the glass; If you scrape on the uncoated glass beads, there is only a sense of smoothness.