Pearls are very different from the other gemstones because of their source. The pearl is an organic gem that is created when an oyster, irritated by the presence of a foreign object inside the shell, covers the object with a beautiful layer of nacre. The oyster does so to protect itself from the irritant and to isolate the foreign object within the shell. Nacre slowly covers an object (usually it is a grain of sand) with layers of aragonite over time – that is the way a pearl develops. It takes about 12 years for a grain to become a real pearl.
Pearls do not need any additional or artificial processing. Since ancient times, pearls have been considered both classically simple and elegantly chic stones. In China 4000 years ago, taxes were paid with pearls. In Ancient Europe, pearls were used for adorning icons, religious objects, and clothes. A pearl’s value depends on its color and size. The clearer the pearl's color means the more the pearl sparkles and the more it would be valued.
Pearls can be not only of traditional white, but also of blue, rose, red, yellow, and even black color. Red or rose pearls look like corals, but their silver shine and the unique microscopic patterns on their surface resemble burning flames. This kind of pearl is very highly valued: some rose pearls can cost over ten thousand dollars each. The best rose pearls come from the Persian Gulf, but despite their great quality, they are usually fairly small in size. The northern coast of Australia is famous for its big white metallic glittering pearls. The largest pearls can be found in shells of big oysters called tridacna.
Black pearls are the rarest and the most valued among other pearls. After the invention of the artificial pearls production method, naturally black pearls considerably fell in price. Nevertheless, the natural black pearls are still very valuable because, as opposed to the artificial white pearls that look nearly authentic, the artificially grown black pearls are hard to mistake for the natural ones. Sometimes, naturally grown pearls are dyed with silver nitrate to make them black, but these dyed pearls can be easily recognized as well since their color is much smoother and darker than that of the natural stones.
The main difference between the natural and the artificially grown pearls is hidden in the core of a pearl itself. The heart of pearl is a small grain of sand covered with multiple micro-layers of nacre that is a few millimeters thick. Such pearls glitter very attractively because they shine from within. Artificially grown pearls are also beautiful, but they are no substitute to the shine of the natural pearls. The artificial pearls are grown from much larger grains of sand, which speeds up their growth process and yields larger pearls, but also significantly diminishes their shine because fewer layers are required to achieve the desired pearl size.
Currently, the practice of cultivating pearls is widely used all over the world. When a grain of sand or a part of another pearl oyster is artificially placed into an oyster shell to form a pearl around it, the process is similar to artificial insemination. This ‘insemination’ process is a fine surgical act – if the procedure is done incorrectly, an oyster can eject the implant or even die. The result of a successful procedure is a pearl grown in a shell in a couple of years. A pearl’s color depends on the parent oyster and the color of the nacre emitted by the oyster. The tints of the colors depend on the temperature of water where the oysters live.
Pearl is a talisman for pure and sincere love, devotion, and joy. It protects its wearer from ill-wishers and offenders, from negative energy, hexes, evil, and betrayal. It is believed that pearls cannot tolerate evil and go dull from being close to it so dishonest people with dark souls cannot wear pearls well. On the contrary, pearls thrive when worn by kind and openhearted people. Pearls also protect their owners during journeys at sea (one just needs to submerge pearl earrings or necklace into sea water), and they bring longevity and happiness.