Posts Tagged ‘Calcium Carbonate’

Ten tips for the daily Conservation of pearl

Sunday, August 9th, 2009

Pearl to its warm, beauty, love for people has always been known as Queen’s jewelry. Pearls with a mechanism composed of calcium carbonate, chemical stability of the poor can be dissolved in acid, alkali, the inappropriate contact with daily life perfume, oil, salt, alcohol, fat, milk, vinegar and filth; more water can not contact the banana organic solvents; summer sweat more than the human body and it is not proper to wear pearl necklaces, senior neutral when not in use soap or detergent washing gently clean, dry and then can not be in the sun exposure or baking; collections could not be with the camphor ball together, not long-term on the bank vaults. Lower the hardness of pearls. Wearing a long white pearl will be yellow, so that gloss variation can be 1% -1.5% hydrogen peroxide bleaching, it is necessary to pay attention to not drift too far, or else they will lose their luster.

1. Anti-acid erosion: To enable the pearls luster and color will not be affected, should avoid contact with pearl acid, and alkaline chemicals, such as perfume, soap, water and other stereotypes. Do not wear pearl jewelry swimming or bathing. So please put on your make-up and then the lovely pearl.

2. Away from the kitchen: a small pearl surface pores, so it should not foul the air inhaled substances. Pearl will absorb the hair spray, perfume and other substances. So nice not to wear pearls under electric hair, so does the kitchen .Do not wear pearls beautiful cooking, steam and smoke may infiltrate into pearls, make it yellow.

3. Cashmere cloth serve: After each wearing pearls (especially during the hot days) should be placed after clean pearl, pearl luster can be maintained. Best sheep’s clothing, or delicate flannel, do not use glossy paper, glossy paper because some of the friction will wear pearls.

4. Not near water: Do not clean water pearl necklace. Water can enter the small beads inside, not only difficult to dry, it might even make it to ferment and beads may also be converted to the green line. Such as when to wear out a lot of sweat, wet towels can be used with care soft, natural jewelry box back after drying. Light can be used occasionally alkaline cleansing, moisturizing to maintain pearls (only in line with nylon strings of pearls, not suitable for silk strings of pearls). After the yellow pearl, we can remedy: soak with diluted hydrochloric acid, the shell can be discolored to reproduce the crystal pearl brilliant, charming color glory. However, if too much yellow color, it becomes irreversible.

5. The need for air: not long-term will be on the safe pearls or sealed plastic bags to use. The need for fresh air pearls every few months would bring it up to wear, so that they breathe. Such as long-term easily on pearl yellow box .

6, to avoid exposure: As with some of the water pearls, pearls should be placed on the shade as much as possible to avoid exposure to direct sunlight, or placed in areas too dry to avoid dehydration pearls.

7. Anti-scratch hard objects: pearl jewelry should be kept separate to avoid scratch other jewelry pearl cortex. If you intend to wear beads above the clothes, clothing texture is more of the best. Too coarse material may be scratching your precious pearls.

8. Flat storage: Do not hang the long-term will be beads, a long time, will relax thread deformation, it should be placed collection.

9. Pearl rings: when lowering of pearl ring, grasp the ring’s shank or metal part, do not use the beads bearing the place for you to avoid pearl bearing surface of the loose, but also to prevent the dirt of your hands and sticky skin secretion of oil on the beads.

10. Regular inspection, 3-year-for-line: easy to loose threads a long time can be 1 ~ 2 years to send our periodic maintenance of cleaning, checking whether the loose threads, and to help replace the thread;

3-year-for-line: the best pearls for every 3 years to re-string one, of course, would depend on how determined the number of wear. Beads of dirt into the hole

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Article Source:http://www.articlesbase.com/jewelry-articles/ten-tips-for-the-daily-conservation-of-pearl-1102531.html

Tahitian Pearl Necklaces – Cultured Pearls Have Nothing On These

Friday, July 31st, 2009

Cultured pearls are not actually considered by gemologists to be completely natural; however Tahitian pearl necklaces are made from pearls which are some of the only completely natural pearls found in the world. In terms of cultured pearls a small shell embed is planted in the oyster to grow a pearl, these are actually usually hollow, and so a cultured pearl is also hollow.

It is really only ignorance that leads people to believe cultured pearls are natural, but they are not the real deal. In times gone by, there were no cultured pearls and any pearls used in jewelry were completely natural.

The warm waters of the Pacific ocean is where Tahitian Pearls are grown, the eco system is perfect for black lipped oysters, the clever creatures which produce these gems. They thrive in these warm waters and grow quite large, generally speaking the larger an oyster is, the larger the pearl it produces will be.

Although Tahitian oysters are farmed for the pearls they produce, it is still not the same scenario as creating cultured pearls. They are kept in lagoons where the eco system is carefully kept free of pollution, and temperatures as well as nutrition levels are regularly checked. The natural ecology of the areas these oysters are grown in is monitored well.

A pearl is grown from a calcium carbonate substance that is secreted by the oyster. This is known as aragonite. It is the same secretion that creates the mother of pearl on the inside of the shell of the oyster. A pearl is grown when a foreign substance enters the oyster and irritates it.

The layers secreted are approximately 1 micron in thickness (0. 001mm), and the oyster secretes 4 layers of the aragonite around the foreign object every day. If you consider that a black lipped oyster lives for about two years, it will secrete two thousand layers of aragonite. It is because of this that Tahitian pearls are so valuable, they are denser, of a better quality and light reflective. This density makes them shimmer and the colors appear to be far more brilliant than any other pearl.

In order to evaluate the quality of these pearls certain criteria is used. These criteria include size, color and light refraction. As with gems, the larger these pearls are the more valuable, and the same applies to their color and luminosity. Chinese and Japanese pearls don’t come near in comparison and Tahitian pearls are between 8 and 14 mm in diameter. Larger have been found and the most famous of these pearls is the “Robert Wan” which measures 20. 92mm.

Rough pearls are the most wanted and you also find these pearls varied shapes, they are rarely perfectly circular. The quality is determined by the shine and any imperfections, as the purity of the pearl is influenced by exterior irregularities, marks and scratches.

The range of colors of Tahitian pearls is many and varied, they come in light, dark and in-between overtones and undertones across the spectrum. They are so unique that colors may be matched with other gemstones and precious metals to manufacture spectacular jewelry. The most valuable of all Tahitian pearls is the “peacock” this is a pearl of spectacular beauty which is a dark grey-green with overtones of pearlescent rose. The black variety of these pearls is actually not black, but dark shades of blue, green, grey and even reddish brown, or a mixture of any one of these colors.

Choose and buy from our huge variety of Tahitian pearl necklaces and pearl jewelry. To know more about Tahitian pearls and their specialties come to us.

Article Source:http://www.articlesbase.com/jewelry-articles/tahitian-pearl-necklaces-cultured-pearls-have-nothing-on-these-1085356.html

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