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Cultured Black Pearls

A cultured black pearl can be cultivated from oysters or manufactured by humans by dying a white pearl black. The most rare, and most expensive cultured black pearl comes from an oyster found in the South Seas, and is cultured from an oyster that is large, and black lipped. A cultured black pearl coming from China or Japan is likely a white cultured pearl that has been exposed to radiation, or dyed black. The following paragraphs will discuss some interesting facts about these cultured gems.

The natural black color of a black pearl comes from the black lipped pinctada maxima oyster, which can reach a foot or more in diameter. The nutrient rich ocean waters of Tahiti and surrounding islands are an ideal abode for this type of oyster. As a matter of fact, it is the only place in the world wear a natural cultured black pearl can be found, making these pearls most rare, and most expensive.

Though traditionally, black pearls are called black, their shades range in color from soft gray to the color of a black magic marker. Very often cultured black pearl s of Tahiti have different overtones, including blue, purple, and even green that are beautiful and amazing. The cultured black pearl with green overtones is often referred to as "peacock green" an is most valuable of all cultured black pearls because of it's rarity and beauty.

Most other black pearls are manufactured with their color altered to make them black. One process of manufacturing a black pearl is known as "French dying". By French dying a white cultured pearl black, the retailer is producing a strong, even color, that generally lasts for many years. A cultured black pearl colored this way is still a real cultured pearl, and should be handled with the same delicate care as a black pearl colored naturally.

Cultured black pearl jewelry is a wonderful addition to any woman's jewelry collection. Cultured black pearl jewelry can be worn casually, or elegantly, depending on the need. A few of these are theblack pearl necklace, black pearl earrings, ablack pearl rings, a black pearl pendant, and a black pearl bracelet. Being the only gem that comes from a living creature, a black pearl is unique in it's own name.

How Do Imitation Pearls Differ from Cultured?

Natural pearls and cultured pearls are produced in rivers, lakes, and a by living mollusks and can be very similar in appearance. Imitation pearls -- also called "faux," "stimulated," and most recently "semi-cultured" are not created by any living creature. They should not be referred to in any way as a genuine or cultured. Imitation pearls have never seen the inside of a mollusk. They are entirely artificial, made firm round glass, plastic, or shell beads dipped in a bath of ground fish scales and lacquer (called pearlessence), or one of the new plastic substances. The difference can usually be seen right away when compared side-by-side. One of the most obvious differences is in the luster. Give it the Luster Test: the cultured Pearl will have a depth of luster that the fake cannot duplicate. The fake usually has a surface "shine" but no inner "glow." Look at a fine cultured Pearl and on imitation pearl side-by-side (away from direct light) and notice the difference.

Use the "Tooth Test" to Spot the Fake

There are some fine imitations today that can be very convincing. Some have actually been mistaken for fine cultured pearls. An easy, reliable test in most cases is that "test." Run the Pearl gently along the edge of your teeth (the upper teeth are more sensitive, and also be aware that this test won't work with false teeth). The genuine Pearl will have eight mildly abrasive or gritty feel (think of the gritty feeling of sand at the seaside -- real pearls come from the sea), while the imitation will be slippery smooth (like the con artist, slippery smooth signifies a fake!). Try this test on pearls you know are genuine, and then on known imitation to get a feel for the difference. You will never forget!

The two tests may be unreliable for amateurs when applied to the imitation "Majorica" Pearl, however. Although to the trained eye they have a very different look from cultured pearls, this is an imitation pearl which might be mistaken for genuine. Close examination of the surface under magnification will reveal a fine" employee" surface that is very different from the smooth surface of a cultured or natural Pearl. An experienced jeweler or gemologist can quickly and easily identified a Majorica for you.

How Long Does It Take to Make a Beautiful "Pearl"?

In the case of natural pearls, as we mentioned, it can take many years to create a beautiful Pearl. With a cultured pearls, cultivation. -- the amount of time in nucleus remains in the mollusk after the implant procedure -- normally ranges from about two years to six months, or less. The shorter the cultivation period, the thinner the nacre; the longer the cultivation period the thicker the nacre. If the cultivation period is too short, pearls will not last. Buyers must be careful not to buy pearls with nacre that is too thin. Many inexpensive pearls sold and special promotions have such thin nacre that it is already chipped in starting to peel. Be sure to look very carefully near the drill hole by the knots for any sign of chipping. If you see this, don't buy them; then nacre will soon come off and you will have worthless shell beats, not pearls.

The link of the cultivation period is a matter of serious debate today. At one time pearls remained in the oyster for much longer periods, up to five years; in the 1920s to 1940s, the cultivation period was much longer that it is today some most cultured pearls had very thick nacre. However, surfaces were more spotted. For culture Pearl growers today, escalating production costs and ever present natural risks to the oyster crop are reducing by shortening the cultivation., as are deviations in shape and imperfections across the surface of the Pearl. Each of Pearl producer must decide how to best to balance all the factors involved so that a lovely Pearl is produced, at an affordable price, without unnecessary risk, or nacre that is too thin.

How Much of the Pearl Is Really "Pearl"?

Primary physical differences between natural and cultured pearls are related to the thickness of the actual "Pearl" substance, the nacre. The thickness of the nacre FX size, shape, beauty, and how long the Pearl will last.

In cultured pearls, the size of the nucleus dictates the size of the Pearl; in cultured Pearl production, larger pearls are produced by inserting a larger nucleus, smaller pearls by implant in a smaller nucleus. The time required to produce a large culture Pearl is essentially the same as that required to produce a smaller cultured Pearl.

In planting normally begins in January/February with harvesting in November. The largest nuclei are implanted first, to give them the advantage of a slightly longer cultivation.; the smallest are implanted last, sometimes several months later, and usually have a shorter cultivation period, but since the nucleus is smaller than the ratio of nacre is normally still comparable to larger pearls.

While it takes several years to raise the mollusk and produce a find culture Pearl, natural pearls take many years, even for very small pearls. With natural pearls, the Pearl is an essentially all nacre, with no nucleus at its core. The process that creates the natural Pearl is usually started by a very small intruder, so the size of the Pearl is an indication of the number of years the Pearl has been in the mollusk rather then the size of an implant. Small natural pearls have normally been in the mollusk for a shorter time; larger pearls a much longer time. The Process that creates the cultured Pearl starts with a nucleus; smaller pearls have a smaller nucleus, larger pearls have a larger nucleus.