October 16, 2009

Black Cultured

black cultured pearl

Few women do not like pearls. It's so bright and beautiful. But how cultured pearls? As we know, the pearl, symbol of purity, virtue and modesty, is also one of the most precious types of jewelry. Technically known as "organic gems", pearls have been harvested and used for over 4,000 years. His appearance, and how they are acquired, has changed dramatically during that time and especially in the last hundred years. Pearl jewelry, but it remains a classic.

A pearl forms when an irritant such as sand or a parasite, is housed in the shell of an oyster. The oyster deposits layers of a semi-transparent crystalline material called "nacre" around the intruder, the construction of the layers for years, and the creation of a pearl. Natural pearls take many years to develop and often have irregular shapes, ranging from just outside spherical to twisting, bulging shapes called "baroque." In any case, are rare and very costly.

Around the early 20th century, it was learned that if a sphere of material was placed in an oyster and oyster stimulated correctly, the oyster could create an almost perfectly round pearl. The longer the pearl of the oyster, the larger and more valuable the pearl becomes. These are called "cults" pearls. Almost all pearls used in jewelry today are cultured pearls.

Pearls are grown worldwide, but Japan, China and the United States remain in the forefront of production. Different types of oysters in seawater or freshwater mollusks, create cultured pearls with different sizes, colors and other qualities.

Cultured pearls are classified into five different grades:

Luster and orient

Luster is the sharpness and intensity of the reflections on the surface of the pearl, and orient is the iridescent colors one sees in the pearl. The greater the brightness and the East, the more valuable the pearl.

Color

Color describes both the main color (usually white, black or yellow) and background (often pink, rose, or even green.) Pearls can also be dyed any shade according to personal preferences.

Clean

This describes how many imperfections on the surface of the pearl. All real pearls - Natural or cultured - will have some imperfections, but less and less sensitive than the best.

Shape

In general, spherical pearls are the most precious. However, it is common to find small imperfections in shape, which can sometimes be desirable, provided they are symmetrical. Teardrop pearls, for example, is often used in earrings and pendants.

Size

Cultured pearls are sold by diameter, measured in millimeters. In general, cultured pearls are rarer and more expensive. But also consider how well the pearls are when combined in jewelry, like a necklace or slopes. Look for pearls that are essentially the same size, color, shape and brightness. Note that the pearls to fit best in a piece of jewelry, the higher the cost. Therefore, pearl earrings cost more than two individual pearls.

When buying pearls, remember that you are mild enough gems. They can be easily scratched If they bump into things or other jewels. Keep them separate from harder gems in his jewelry box.

Black Pearls cultured

Black Cultured Pearls come from a variety of sources. The rarest are those of a large black-lipped oyster found in the South Seas. These oysters create large silver gray to black pearls that can have other colors and tones - the most valuable green peacock welfare.

Given the rarity of black South Sea cultured pearls, increasing black cultured pearls can be used as an alternative. These are dyed all the way by using a process called "French dying", producing a couple of strong color, which lasts for years. However, they are colored, they are real cultured pearls and should be handled with the same care as any other.

Freshwater pearls

Recently, techniques have been developed to culture pearls in freshwater mollusks. These are sometimes called "Biwa pearls," after the lake in Japan where he first developed, but today that name should only be used for cultured pearls from Lake Biwa.

Pearls freshwater cultivated throughout the world, although China is the largest producer. Some are spheres and used like other round pearls, some are shaped button and is used to accent jewelry, some are in the form of blisters, or even Crispie shaped rice. The big ones are often called Mabe, which is often used in earrings and other pieces with the closed behind.

Care For Your Pearls

Pearls are very beautiful, but also are sensitive to the rules of jewelry. The layers of nacre that form a pearl is soft and easily damaged. Because it is an organic compound, a pearl can be easily muted or even eaten by the chemicals and alcohol.

Cultured pearls should never be washed only in very mild soap and water - nothing else. It is also a good idea to bring them in for restringing every couple of years, especially if you use a lot.

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Article Source: ArticlesBase.com - Do You Love Cultured Pearls?