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última version al 13:19 9 may 2012

The Pacific Ocean is property to the black-lipped oysters that produce big Tahitian pearls. The ocean waters are warm, and this makes it possible for the oysters to develop much more substantial than in other areas, thus making larger pearls. Tahitian oysters are farmed in significant sheltered lagoons that are stored cost-free of air pollution and overcrowding. H2o temperatures and dietary levels, as well as environmental and biological conditions are monitored carefully. These nicely cared for oysters are responsible for making the beautiful Tahitian Pearls. Tahitian pearl

How a Tahitian pearl is formed

Aragonite, which is a form of calcium carbonate, is secreted by the pearl oyster. This substance coats the within of the oyster shell and creates the "mother-of-pearl" lining. It also types the layers of the pearl. The oyster can create aragonite secretions up to four instances a day with each and every secretion forming yet another layer. The layers are about a single micron or 0.001mm thick. Tahitian oyster dwell for about two decades which means they create up to about two thousand layers; far more than most other pearls. The mild passes via these multiple microscopic layers and is reflected and refracted to produce a shimmering effect. This shimmering generates superb hues which look to journey and shift during the pearl. This is component of what helps make the Tahitian pearl so unique.

Criteria

Pearls are graded centered on specified criteria. These are:

o Size - the high-priced pearls are the more substantial ones. The Robert Wan Pearl is the most significant Tahitian Pearl and it measured in excess of 20.92mm or 13/16 of an inch in diameter. Tahitian pearls typically measure between 9mm and 14mm and are substantially bigger than Chinese or Japanese pearls.

o Pearl Thickness - layers bordering the nucleus.

o Shape - round pearls are the most sought following and are not able to range far more than 2% from currently being properly spherical. Tahitian pearls can also be semi-round and semi-baroque.

o Surface Purity - surface area imperfections on the pearl.

o Quality - the luster and the imperfections of the pearl.

o Brilliance - the orient and the luster of the pearl. The orient, which is the shimmering high quality of the pearl, is quite obvious in Tahitian pearls.

Colors

Although black pearls are obviously black, they are extremely exclusive in their coloration. The pearls highlights can be silver and even gold. The overtones on a Tahitian pearl can be blue, purple and even green. The versions in the shades of the pearls make really striking jewellery when combined with other gemstones and metals.