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  1. #31
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by CortezPearls View Post
    Another natural pearl from the Gulf of California. This one is from a Clam we usually call "Almeja Ro?osa" or "Rough Clam" (family Veneridae). Unfortunately I don't have the species' scientific name (I need my long lost book on sub-tidal invertebrates).
    Anyway, the pearl weighs 2.1 grams and measures 10.3 x 12.5 mm, with an oval-drop shape. Does not display any "flame" structure, but more of the "jelly-bean" attributes of "Conch Pearls". Still it is a large pearl and its host shell displays the site where the clam suffered some traumatic event that led to the birth of this very rare pearl.

    Hope you like the photos...
    Found it: Chione californiensis. This document refers to Bah?a Magdalena habitat.

    It certainly is an impressive find, especially with shell. A fine pearl by any standards.

    Another (no doubt delicious) flavor for the jelly bean jar!
    Last edited by smetzler; 08-30-2010 at 11:24 PM.
    Steve
    =======

  2. #32
    Co-Founder: Cortez Pearls Senior Guide Member CortezPearls's Avatar
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    The "Chocolate Clam" (or "Almeja Chocolata") is Megapitaria squalida. Very different animal...my guess is actually more towards a species of Chione or even Chionopsis gnidia... but since I don't have my book I can't remember certain traits (number of "ribs" & hinge teeth...technicalities). But here is a bigger shell, maybe someone can help with the id.

    Megapitaria would make nice "cocoa" colored pearls...just kidding...the inner shell is pure white. Check out the looks of the animal here. It is one of the tastiest inhabitants of the Sea of Cortez...but we have yet to find a pearl in one.
    Attached Images Attached Images  
    Douglas McLaurin-Moreno
    Co-Founder Cortez Pearl Farm
    Guaymas, Sonora, Mexico
    Website: www.perlas.mx
    Douglas McLaurin's Blog
    Sustainable Cortez Pearl Jewelry: www.perlas.mx
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    Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
    Douglas McLaurin-Moreno

  3. #33
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Douglas?we 'crossed in the mail.' Chione it is, note my correction that was being made as you posted. The prior document included some reference to 'almeja ro?osa' (seems like habitats are practically identical) thus popped up in my search.
    Steve
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  4. #34
    Co-Founder: Cortez Pearls Senior Guide Member CortezPearls's Avatar
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    We sure did Steve! I am now narrowing the species... can't be Chione californica because the largest size reported for this species is of 68x65x38 mm and this shell is twice that size...but there are just so many Chione species here...might just leave it at Chione humoungous

    Here is another photo of the pearl:
    Attached Images Attached Images  
    Douglas McLaurin-Moreno
    Co-Founder Cortez Pearl Farm
    Guaymas, Sonora, Mexico
    Website: www.perlas.mx
    Douglas McLaurin's Blog
    Sustainable Cortez Pearl Jewelry: www.perlas.mx
    Follow Me!
    Instagram
    YouTube
    ]


    Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
    Douglas McLaurin-Moreno

  5. #35
    Natural Pearl Senior Pearl-Guide.com Pearl Expert
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    Iron-clad proof that Google can only get you so far without setting feet on the ground!

    (Or fins in the water…)
    Last edited by smetzler; 08-31-2010 at 09:26 PM.
    Steve
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  6. #36
    Pearl Maven Senior Pearl-Guide.com Pearl Expert Caitlin's Avatar
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    Who knew that?! I love these posts. They expand my pearl education far beyond anything I dreamed of when I first got here! Such a valuable record.....
    Caitlin

    How to hand-knot pearls without a tool

    My avatar is a Sea of Cortez mabe pearl. One of a pair of Mexican handmade earrings.

  7. #37
    Co-Founder: Cortez Pearls Senior Guide Member CortezPearls's Avatar
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    New Pearls!!! Thsi morning I had a Pen Shell Fisherman here, with his treasure cove of natural black-pen-shell pearls from the "Callo Botij?n" or Atrina maura.

    We don't buy pearls but fishermen believe we do so they just bring the pearls in...we would not really promote or support a pearl fishery (not kosher) in the Gulf of California. Anyway, this small stash consisted of some very nacreous, solid, very jet-black pen shell pearls in sizes between 3 to 5 mm (and some very tiny ones, of course) and some calcitic and protein based ones as well... hope you like them!

    Name:  Atrina maura natural pearls 004 [640x480].jpg
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    Douglas McLaurin-Moreno
    Co-Founder Cortez Pearl Farm
    Guaymas, Sonora, Mexico
    Website: www.perlas.mx
    Douglas McLaurin's Blog
    Sustainable Cortez Pearl Jewelry: www.perlas.mx
    Follow Me!
    Instagram
    YouTube
    ]


    Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
    Douglas McLaurin-Moreno

  8. #38
    Inactive Senior Pearl-Guide.com Pearl Expert
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    Quote Originally Posted by CortezPearls View Post
    ... hope you like them!
    I certainly like them.

    You are right about the "very jet-black" part.

    The egg-like pearl has nice swirls of brown over white and great shape.

    Thanks for taking the time to show us.

  9. #39
    Co-Founder: Cortez Pearls Senior Guide Member CortezPearls's Avatar
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    My pleasure Dave! I love sharing with you all...we're "Family"!!!
    Douglas McLaurin-Moreno
    Co-Founder Cortez Pearl Farm
    Guaymas, Sonora, Mexico
    Website: www.perlas.mx
    Douglas McLaurin's Blog
    Sustainable Cortez Pearl Jewelry: www.perlas.mx
    Follow Me!
    Instagram
    YouTube
    ]


    Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
    Douglas McLaurin-Moreno

  10. #40
    Pearl Journalist Senior Pearl-Guide.com Pearl Expert Octavia's Mom's Avatar
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    Those pearls are a treat to behold! I especially like the caramel and white pearl. Definitely very nacreous black pearls. Mmmmm....

  11. #41
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    Default The shell is a Veneridae, Periglypta multicostata

    [QUOTE=CortezPearls;70410]The "Chocolate Clam" (or "Almeja Chocolata") is Megapitaria squalida. Very different animal...my guess is actually more towards a species of Chione or even Chionopsis gnidia... but since I don't have my book I can't remember certain traits (number of "ribs" & hinge teeth...technicalities). But here is a bigger shell, maybe someone can help with the id.

    This shell is Periglypta multicostata, almeja reina or, in English, Many-rigged venus.

  12. #42
    Pearl Scholar Senior Pearl-Guide.com Pearl Expert pattye's Avatar
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    Welcome to the forum! Shells are as fascinating as the pearls themselves.

    Red pearls are my favorite also, though natural color red pearls are only in my dreams!
    Pattye


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    SO MANY PEARLS, SO LITTLE TIME----

  13. #43
    Natural Pearl Senior Pearl-Guide.com Pearl Expert BlackPearlDudeDC's Avatar
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    It has been some time gone by, I hope Douglas has some new natural treasures to share soon.
    “No,” Midge said, “I take it back. I wouldn’t get a mink coat the first thing. Know what I’d do? I’d get a string of pearls. Real pearls.” Yes,” Annabel said, slowly. “I think that’s a kind of a good idea. And it would make sense, too. Because you can wear pearls with anything.”

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