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Friday, 08 May 2009 |
By Anni Pelmeni
 In the Ancient China people believed the pearls would help to improve sexual energy, enhance sight, and heal the diseases of the ears. According to the legend, the pearls appear from the early dew which was considered to be the tears of the goodness of love. The pearls could give its bearers the foreseeing gift, save from the risky deals and from the evil eye.
The oysters emit the calcite and the mussels emit the aragonite. On the outside surface there is a zone where the calcareous is being produced in a form of the little scales which then are formed into the nacre. In this way the shell consists from the three layers which grow and develop constantly and simultaneously to the growth of an oyster or a mussel.
When the shell is damaged, the epithelium is capable of re-producing all three layers in the correct order. The valve folds of the shell are connected by a strong muscle which when being relaxed opens the shell in order to obtain the food from the |
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Last Updated ( Friday, 08 May 2009 )
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Monday, 04 May 2009 |
By Michael Landonson Price
 Although some might debate the point; in this authors view; freshwater pearls offer the best value available in pearls. The reason for this is that cultured freshwater pearls are basically indistinguishable from natural pearls (which are now largely commercially unavailable and if they were available, their cost would be prohibitive for most people), and yet the price of freshwater pearls is well below any of the other major pearl varieties.
For the past century or so, saltwater pearl culturing has involved implanting oysters with a tiny piece of oyster mantle tissue along with a spherical shell bead. When everything works as intended, the host oyster then coats the bead with nacre, layer upon layer until the bead is totally hidden under a number of coats of nacre. (Nacre is the smooth and iridescent shell material used by the mollusk to coat the inside of its shell also called; Mother-of-Pearl.) After the pearl farmer determines that the coating of nacre is sufficiently thick, he harvests the pearl and it is cleaned up, polished, sometimes further processed, and |
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Last Updated ( Monday, 04 May 2009 )
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