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The Pacific Ocean is property to the black-lipped oysters that create large Tahitian pearls. The ocean waters are warm, and this enables the oysters to expand a lot larger than in other areas, thus producing larger pearls. Tahitian oysters are farmed in large sheltered lagoons that are held free of charge of air pollution and overcrowding. H2o temperatures and nutritional levels, as properly as environmental and biological circumstances are monitored carefully. These well cared for oysters are responsible for producing the stunning 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 makes the "mother-of-pearl" lining. It also kinds the layers of the pearl. The oyster can make aragonite secretions up to 4 instances a day with every secretion forming an additional layer. The layers are about a single micron or 0.001mm thick. Tahitian oyster reside for about two decades which means they create up to about two thousand layers; more than most other pearls. The mild passes by means of these numerous microscopic layers and is mirrored and refracted to create a shimmering effect. This shimmering results in wonderful colours which appear to travel and shift all through the pearl. This is component of what makes the Tahitian pearl so unique.

Criteria

Pearls are graded primarily based on certain criteria. These are:

o	Size - the expensive pearls are the larger ones. The Robert Wan Pearl is the biggest Tahitian Pearl and it measured more than 20.92mm or 13/16 of an inch in diameter. Tahitian pearls typically evaluate between 9mm and 14mm and are significantly bigger than Chinese or Japanese pearls.

o	Pearl Thickness - layers bordering the nucleus.

o	Shape - spherical pearls are the most sought right after and can't fluctuate far more than 2% from becoming perfectly spherical. Tahitian pearls can also be semi-round and semi-baroque.

o	Surface Purity - surface 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 quality of the pearl, is quite apparent in Tahitian pearls.

Colors

Although black pearls are normally black, they are really 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 variations in the colours of the pearls make very striking jewelry when combined with other gemstones and metals.