The Lagoon Environment
Where Do Pearls
In the territory of French Polynesia, closed lagoons represent the ideal ambiante the cultivation of pearl-producing oysters. It consists of a stretch of water entirely surrounded by coral reefs that offers few opportunities for current and flow of ocean waters. Such a stable environment offers growers the opportunity to be able to act in cleaning the molluscs, and for the cultivation process. Also the eggs are protected from currents to avoid being lost. And finally the facilities and equipment are protected from the elements.
Livestock and Crop
Phases of the Pearl Oyster Culture
In the early summer days of the pearl farms dip nets to catch the larvae. These networks will remain submerged up to December (3.4 mt) which happens to be the most auspicious time to hoist them to the surface and collect the larvae (the shellfish have already developed the shell).
After harvesting and grading according to size, negono larvae again lowered to a depth of 7 meters and suspended in baskets thanks to the stainless wires connected to the floats (to avoid being attacked by their natural predators). Fishing of oysters of the South Seas – Polynesia in this period the baskets will be hoisted for periodic cleaning of the shells ( every 3 months). Reached the 5/7 cm oysters are ready to be fixed with a wire (through the hole in the hinge). Will remain so up to 7 / 13mm, right moment to practice grafting.
The Graft and Extraction
Surgical Practice of Pearl Oyster Culture
The graft is the most delicate phase of the process. Despite some Polynesian be able to practice, usually the daunting task is left to the Japanese specialists. Dovo choosing the healthiest specimens and with the best gonads. In warmer coastal waters the clam is stimulated and releases the eggs, leaving the empty gonads with the space necessary to accommodate the graft.
The shell is placed on a special support from technician, with dexterity and skill, shall decide the size of the nucleus to be included (according to the gonads). A small incision is where you insert the tissue fragment of the coat of a donor who will have to adhere to the coat and the pearl, on the inside. After closing the wound with the mucus secreted by the animal and pulling out the wedge, the animal is closed and is ready to be placed in special containers waiting to go into the sea.
Extraction of Tahitian pearls
Over 50% of the oysters die or reject the nucleus making it particularly difficult this crop. In survivors, the tissue grafted avolge the core creating a kind of pouch and then begin to secrete calcareous secretions (2 years) ; the cause in nacre.
Between May and November takes place the harvest of Tahitian pearls. Some are rinucleate, other (as a result of nucleation 2) are released into the sea while others will serve to the production of blister pearls.
Once extracted, the Tahitian pearls have a slightly tarnished appearance. They will indeed be washed in fresh water and suffer a polishing process (burratura) that will make enviable.
Characteristics of Tahitian pearls
What Makes Them Special
Known for their dark colors and in most cases exceed the expectations of the viewer leaving him ecstatic, the main color is the peacock enclosing cha venno shades from gray to blue and from gray to green. Also they are famous for their size: an average of 8 to 14 mm and in rare cases even over 18 mm. They are generally less round of Akoya pearls making the value of a perfectly round pearl of Tahiti high. Baroque pearls are very popular in the composition of pearl necklaces totally exclusive and fashionable.
In some cases these pearls are having an exclusively excellent natural sheen that assumes a metallic color. This combined with a changing surface color gives the beads a very exotic character.