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última version al 12:56 9 may 2012
The Pacific Ocean is property to the black-lipped oysters that make huge Tahitian pearls. The ocean waters are warm, and this permits the oysters to expand considerably greater than in other areas, therefore generating greater pearls. Tahitian oysters are farmed in huge sheltered lagoons that are kept totally free of pollution and overcrowding. Drinking Water temperatures and nutritional levels, as well as environmental and biological conditions are monitored carefully. These effectively cared for oysters are responsible for generating the beautiful Tahitian Pearls. Tahitian pearl
How a Tahitian pearl is formed
Aragonite, which is a sort of calcium carbonate, is secreted by the pearl oyster. This substance coats the inside of of the oyster shell and makes the "mother-of-pearl" lining. It also types the layers of the pearl. The oyster can make aragonite secretions up to 4 situations a day with every single secretion forming yet another layer. The layers are about one micron or 0.001mm thick. Tahitian oyster dwell for about two a long time which means they create up to about two thousand layers; a lot more than most other pearls. The mild passes via these many microscopic layers and is mirrored and refracted to produce a shimmering effect. This shimmering results in spectacular colours which appear to travel and transfer all through the pearl. This is component of what makes the Tahitian pearl so unique.
Criteria
Pearls are graded centered on particular criteria. These are:
o Size - the pricey pearls are the bigger ones. The Robert Wan Pearl is the greatest Tahitian Pearl and it measured over 20.92mm or 13/16 of an inch in diameter. Tahitian pearls normally evaluate between 9mm and 14mm and are substantially more substantial than Chinese or Japanese pearls.
o Pearl Thickness - layers encompassing the nucleus.
o Shape - spherical pearls are the most sought soon after and can not fluctuate a lot more than 2% from currently being flawlessly 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 top quality of the pearl, is quite noticeable in Tahitian pearls.
Colors
Although black pearls are normally black, they are very unique 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 variations in the shades of the pearls make very striking jewellery when combined with other gemstones and metals.
