There is hardly anyone who has not fallen prey to the magical charm of the pearls. When it comes to pearls it is difficult to resist temptation. However when it comes to choosing the pearls, a jeweler must be extremely careful. Pearls for a necklace are chosen on the basis of color, size and type. A Chinese freshwater pearl will be different from a South Sea pearl as one can easily make out the difference through their size.
Most of the freshwater pearls are cultured with the help of mantle-tissue nucleation. As for the South Sea pearls they are made by using the bead-nucleation process. Bead-nucleation is used to produce larger pearls. The size of the bead actually determines the size of the pearls. As for the mantle-tissue nucleation, it does not determine the shape of the pearl.
In case of a bead-nucleation a bead is formed with the help of a mussel shell. The shell that is used in the process generally comes from the freshwater resources. Then the bead is inserted within the oyster. Although this is an artificial process, it is extremely time-consuming.
In case of pearl culture, only one pearl is grown at one time. If the oyster is healthy, then beads can be implanted again. In this case the pearl from the second generation will be larger and has a greater market value.
After inserting the bead, the oysters are taken to the original resource. In case of the first generation, it takes some one-and-a-half-year to three years for the proper growth of the pearls. However growth rates depend on many factors, like the growing conditions or the climactic conditions, and the conditions of the farm. You can also grow a third generation pearl if you have the desired results from the second generation pearl.
However if you look for rich luster, nothing can be better than the first generation pearl. It is difficult to determine the generation of the pearl by looking at it. However if you are looking for some buying tip, you should always remember to look at the luster of the pearls. The richer the luster and the smoother the surface, the better the quality.
You should also know that it is the nacre thickness which determines the size, luster and the color of the pearl. If you love to look at beautiful, priceless jewelry then you can simply visit the online shop at PearlTreasure.com. A wide selection awaits you and you will be completely mystified when looking at the exclusive designs. Be it a pearl drop or a necklace, you will definitely love to possess one. When you look for that special smile on the face of your loved one, you can simply opt for the lovely pearl necklace which speaks volumes for itself.
While there are now laboratories that create synthetic diamonds in a span of a few days, it is the formation and production of natural diamonds that require very specific conditions.
Diamonds formed through natural circumstances are exposed to extremes in high pressure of about 45 to 60 kilobars and to comparatively low temperatures of about 900 to 1900 °C. These rough stones are mined or recovered through either pipe or alluvial mining.
Pipe mining refers to the extraction process found in volcanic pipes. In most locations, a pipe mine is composed of kimberlite, which is dug from the surface of pipes in rough opencast mining.
Once these are exhausted, the diamond miners start digging tunnels into the deeper parts of the pipes. The rocks recovered, which contain rough diamonds, are then moved to a screening plant where the rock bits are separated from the diamond bits.
It typically takes an average of 250 tons of pipes to produce a one-carat gem quality polished gem.
Allluvial mining, on the other hand, is located on riverbeds or ocean beaches. When diamonds were formed in pipes deep inside the earth millions of years ago, some of these separated and was carried out along the rivers and oceans.
In order to mine these diamonds, a wall is built to hold back the surf or water. Up to 25 meters of sand and rock can be bulldozed to reach the diamond-bearing level.
Once these are recovered or mined, the diamond-bearing earth is transported to the screening plants.
Of all the diamonds mined in the world each year, less than half are gem quality, which are used in jewelry making and display a high standard of excellence, usually with a clarity grading of flawless to near invisible inclusions.
The rest that are recovered are either near-gem quality or industrial quality diamonds. Near-gem quality diamonds can either be used to jewelry or industrial applications, depending on the actual stone.
As for industrial quality diamonds, these are usually of low quality or have a lot of blemishes and inclusions, and are usually used as drill bits and for cutting purposes.
All the diamonds recovered from mining will undergo a cutting and polishing process to obtain their final form, as we know it.
Although technology has played an important role in perfecting these techniques, cutting and polishing diamonds has its origins in India, where it was discovered by Indian lapidaries that a diamond can be made to sparkle and be smooth simply by grinding it against another diamond.
Nowadays, even with the use of machinery, diamond cutting and polishing can take anywhere from several hours to several months to complete. Some diamonds, especially gem-quality stones, are studied for months, even years, before the cutting and polishing process begins.
Each stone is different, and must be carefully studied and marked for cutting. That is why only experts commit to this process, as a diamond's ultimate price and value may plummet due to a poor cut.
A diamond can usually stand to lose half of its original weight after this final process.
Both Fred C.3 C. Barnes3 & Paul Easton are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Fred C.3 C. Barnes3 has sinced written about articles on various topics from Pearls. Fred C. Barnes is author of article written on &. Fred C.3 C. Barnes3's top article generates over 40500 views. to your Favourites.
Paul Easton has sinced written about articles on various topics from Engagement Rings, Herbal Supplements and Cosmetic Surgery. Paul Easton is the Marketing Director for Polished Diamonds. High Quality at 1/2 retail Prices available at: => Polished D. Paul Easton's top article generates over 201000 views. to your Favourites.