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  1. #1
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Default KIMA (Tridacna sp) Pearls

    In a couple of currently-active threads Tridacna pearls have surfaced. Also, a thread with Tridacna in its title was recently begun by a seller and as quickly aborted.

    The Indonesian name for Tridacnidae (giant clam genus, Bivalve) is Kima. Indonesia is Tridacnidae's most varied and concentrated habitat given that country's limitless coastlines, coral reefs and remote island locations where this CITES-listed genus is still used as a sustainable, essential resource.

    If an astute Los Angeles PR type could re-christen the Chinese Gooseberry 'Kiwi' to promote its adoption by New Zealand agriculture, why shouldn't the legitimate indigenous name be applied internationally to a pearl family thus far known by a name (Tridacna) more reminiscent of a treatment for teenage skin disorder? After all, we don't call Conchs 'Strombus', nor Melos 'Volute.'

    I propose this thread to focus on quality Kima while discouraging appreciation for huge ugly blisters such as Pearl of Allah, or symmetrical Tridacna 'pearls' that most likely result from the pervasive carving and polishing of abundant shell material.

    Below are recent acquisitions of proper examples, on the left a pair of tear drops in all but size (20 carats and 14 carats), on the right polar views of more and less flamboyantly-expressed chatoyant 'halos.' From a jewelry standpoint, there is a fine line beyond which flamboyant and highly directional chatoyance would make setting problematic, while not diminishing intrinsic value.

    KIMA is an attractive and appropriate name for these potentially beautiful pearls.

    This thread would also welcome examples of non-nacreous gastropod pearls of similar aspect, in the interests of attempting to discern the differences.
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    Steve
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  2. #2
    Perpetual Pearl Student Senior Pearl-Guide.com Pearl Expert lisa c's Avatar
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    Do we actually have any pics of Kima being worn by anyone? I'm wracking my brain and all I can remember are undrilled(?), unworn examples. Time to Google - and thank you again for all you do to keep Pearl-Guide cool and moving along.

  3. #3
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by lisa c View Post
    Do we actually have any pics of Kima being worn by anyone?
    Currently in the process of turning a 54-carat drop into a magnificent platinum pav? centerpiece. Use of colored stones (sapphires) is central to the design. Hopefully we can find a few existing examples for posting here, short of Hubert Bari writing a 'White Pearl' companion to his beautiful 'The Pink Pearl.'
    Steve
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  4. #4
    Natural Pearl Senior Pearl-Guide.com Pearl Expert CLICLASP's Avatar
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    Thanks Steve to sort out subjects properly,
    one more question, when you say :
    Tridacna 'pearls' that most likely result from the pervasive carving and polishing of abundant shell material
    do you mean, "pearls" carved out from the shell, in a way "fake pearls",
    or "pearls " that might have been polished to remove the less beautiful parts on a side ?
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  5. #5
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by CLICLASP View Post
    Thanks Steve to sort out subjects properly,
    one more question, when you say :
    Tridacna 'pearls' that most likely result from the pervasive carving and polishing of abundant shell material
    do you mean, "pearls" carved out from the shell, in a way "fake pearls",
    or "pearls " that might have been polished to remove the less beautiful parts on a side ?
    Both practices are reportedly common, hazards endemic to all porcelaneous pearls (conch, melo, cassis, etc) and analagous to the crisis currently involving certification of nacreous pearls.

    Fortunately, it is a simple matter for the gem labs to determine this, unlike dubious authentication of the nacreous variety. Certification is recommended. The safest way to avoid such pitfalls prior to certification is to choose well-flamed (under loupe, if necessary) specimens with flame structure that is consistent with the shape of the pearl.
    Steve
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  6. #6
    Second-graft Pearl Senior Guide Member Mervione's Avatar
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    Wow, some of those really look like eggs. Cool!
    Actually have an avatar.
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  7. #7
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by Mervione View Post
    Wow, some of those really look like eggs. Cool!
    Could those be Easter bunnies?

    (Comment fair enough, for one who has likened conchs to jelly beans?)

    Turns out, rotation mechanics theory would apply equally to the formation of an egg and a symmetrical pearl.
    Steve
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  8. #8
    Pearl Girl Senior Pearl-Guide.com Pearl Expert Ashley's Avatar
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    Quote Originally Posted by smetzler View Post
    Turns out, rotation mechanics theory would apply equally to the formation of an egg and a symmetrical pearl.
    Ok- that's more than I wanted to know about chickens.
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  9. #9
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Shuffling quickly back to pearls?

    Here is an example of an attractive Kima 'pearl' that may or may not prove of interest. It is unusually (suspiciously?) symmetrical for its large size. I am told it has good flame, but the photos do not support this. A natural point of rotation appears to exist at the top, which is a positive indicator, at least for that side. Will have an opportunity to look closely upon receipt sometime next week.

    If certified natural and there is a degree of chatoyance, it could make a nice centerpiece. Other thoughts?
    Attached Images Attached Images  
    Last edited by smetzler; 09-18-2010 at 07:06 AM.
    Steve
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  10. #10
    Pearl Journalist Senior Pearl-Guide.com Pearl Expert GemGeek's Avatar
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    Darn it, I can't see the photo. <sigh>
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  11. #11
    Pearl Maven Senior Pearl-Guide.com Pearl Expert Caitlin's Avatar
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    Really nice shapes, but the photography appears less than perfect. Looking forward to seeing your photos.
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  12. #12
    Perpetual Pearl Student Senior Pearl-Guide.com Pearl Expert lisa c's Avatar
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    Red X Syndrome - and I can't open it either. Bummer. Lately I've been able to open the red xs, so this is disappointing.

  13. #13
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    I dragged the image from P-G to my desktop and reposted that. Any change?
    Steve
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  14. #14
    Super Moderator Senior Pearl-Guide.com Pearl Expert jshepherd's Avatar
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    Quote Originally Posted by smetzler View Post
    I dragged the image from P-G to my desktop and reposted that. Any change?
    No change. Can you change the file name on your computer and remove the period in 18.4? This might make the file readable.

  15. #15
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by jshepherd View Post
    No change. Can you change the file name on your computer and remove the period in 18.4? This might make the file readable.
    Good point. Period is now a comma. If that works will have to go back through my Nautilus postings.
    Steve
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