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| Hello, I am very found of keshis and had always though these were made of pure nacre. Meaning for me, full pure nacre from center to surface... So I was much surprised when drilling 15 mm south sea keshis, in order to put a clasp into, to see they were hollow pearls! So I wonder what is the growth process that makes an "empty" pearl ? Looks like nacre bubbling over a hole, what strange ! Thanks a lot for clarifying info
__________________ CliClasp http://www.versatile-jewellery.com http://www.cliclasp.com/story_pearl_through_ages.html |
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| That is going to take some time to decipher, but it will be fun. So the crinkled keshi that are hollow were puffed up then deflated? Most of the krinkled ones seem like deflated spheres.
__________________ Caitlin potamilus purpuratus American Pearl Mussel Where can I get a pearl from this mussel? |
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Or maybe you're just trying to confuse us a little bit more...The hole in the middle is originally conchiolin bubbles and C02 (and proteins). The layers of aragonite just accumulate and follow the shape of the conchiolin base.
__________________ Pêcheur de Perles |
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| Hi Caitlin Quote:
About changeable clasp, it's a Swiss registered mecanism, just an easy "push and turn" system, steel or gold, that allows to change as you like either the clasp or the necklace or even a pendant. The clasp becomes the focus point of the necklace ! This mecanism can be put into a pearl or a beastone or any jewellery you can imagine, the photo is a hammered silver one! You can see more pictures and explanations by clicking on the link under my signature that leads too to further infos. Hope you will enjoy !!! Tell me if you want to know more, or any special request !!! Thanks again everybody ![]()
__________________ CliClasp http://www.versatile-jewellery.com http://www.cliclasp.com/story_pearl_through_ages.html |
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| Hi Caitlin QUOTE=Caitlin Williams]Hi CliClasp I knew they were hollow, but not why. Good Question. Meanwhile, waiting an answer from the experts, did you see the thread on dirty gold and the quest for recycled gold clasps? Do you do any?[/quote] I get the thread about recycled gold. I completely agree with recycling material to avoid planet wasting + bad working conditions, and pollution. So the changeable clasps are produced in Europe, either Germany or Switzerland -as it is a Swiss registered mecanism - can be done in gold too. But the real interest is to set the mecanism into the pearl itself so as to highlight the pearl either alone on a wire or a string, or as a "secret" clasp when set in a full strand. Can be an alternative to gold?
__________________ CliClasp http://www.versatile-jewellery.com http://www.cliclasp.com/story_pearl_through_ages.html |
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| Hi Caitlyn, I like the Idea of the clasp mechanisnm being set into the pearl itself, Mu mama, has some Akoya( I will have to ask her to be sure) that have the clasp done this way. She has arthritis in her hands so bad she can not handle the normal variety of clasps.. but this one she can I think its a great Idea.. besides I have borrowed her perls and my 3 year old neiice thinks itis magic how the pearls work, "and they just stay arround your neck??? Auntie Ashby wow teach me the magic....." This concludes youer Ashby Babble on this thread we now return you to your regularly scheduled posters... Cheers Ash
__________________ Ashby one pearl, two pearl, three pearl... More |
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| Sometimes early in the culturing process, an oyster spits out the bead but continues to form a pearl, because it had become so irritated. These become Keshi pearls, byproducts of the culturing process. Some have a hollow space inside visible on X-ray; while some are nearly solid. At top-end pearl farms, X-rays are now taken to make sure the bead has not been ejected; and if it has, the oyster is reimplanted. Consequently, Keshi pearls are becoming rare with improved pearl-culturing techniques. |
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| If I wasn't confused, I sure am now. Isn't it fairly easy to tell with the naked eye the difference between a keishi and a bead-nuked pearl?
__________________ Pretty Panda pic by nlerner on her U.S. excursion last year, San Diego Zoo.[/size][/size] |
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| It is impossible to distinguish a Keshi, a cultured, or a natural pearl with the naked eye. X-rays and crystallography must be used, as at Gemological Institute and other pearl certification companies. Tom Stern,MD |
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| I was going to say something similar: Maybe I should change my name to CWilliams, MAP- that would be Master of Arts in Pearls. joke, joke, my masters degree has nothing to do with pearls so I didn't list it- ! but for all the money I spent on it I probably should.........![]() Quote:
I took some pix the last time I had them apart for cleaning. Here is just one photo where you can see into the hole. Notice the orange glow from the Qatari pearl. No pearl plated bead ever looked like that. I have some other pix from when they were dirty. The layers show up best in that one, but who wants to put up a picture of a dirty pearl? Remember Doug's perfect keshi pearl last year? No test could tell it from a natural except Doug's integrity in stating what it was. I'll look for the link. When you want to sell, it is good to have paper from the pros, though.
__________________ Caitlin potamilus purpuratus American Pearl Mussel Where can I get a pearl from this mussel? Last edited by Caitlin; 10-30-2007 at 05:07 AM. |
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| Here is the link. Actually as I reread this, I don't think it is a keshi at all. I think it is very hard to classify it according to current standards. Doug says it is a natural because it did not grow in an old pearl sac. Now what would the tests say about this one?? Here is a picture:
__________________ Caitlin potamilus purpuratus American Pearl Mussel Where can I get a pearl from this mussel? Last edited by Caitlin; 10-30-2007 at 05:19 AM. |
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Slraep |
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How does one tell if a Tahitian keshi is a true natural or by-product of culturing? Slraep Last edited by Slraep; 12-12-2007 at 07:33 PM. |
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