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  • "New Pearl Oyster Species": Pinctada persica

    "New Pearl Oyster Species": Pinctada persica

    On a controversial note, the SSEF lab in Basel, Switzerland, has introduced the world to a new pearl oyster species, aptly dubbed as Pinctada persica: a unique mollusk species that is only found in the Persian Gulf. This would be the first time -to my knowledge- that a pearl oyster species has been identified by its genetic markings or DNA. Previously, pearl producing species have been described and identified mainly by its shell and anatomical traits, but this is a new era of technological advances...
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  • The Genus Pteria Scoppoli 1777

    The family Pteriidae is composed of three or four genera, and pearl oysters belonging to the Pinctada and Pteria genera are -of course- the most important from our point of view.

    Taxonomy

    An old name for this species is Magnavicula, which means “Large Wing”, with the “new” -Pteria- name originating after the Greek word “Ptero” which translates into “wing”, hence the name of “Winged oysters”.

    These species are identified by...
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  • The Sustainability Corner – Issue 2

    The Sustainability Corner – Issue 2

    Sustaining Life with Pearl Farming

    One of the most important aspects of pearl farming is its inherent ability to protect and create more life than the one that was available previously. And what do I mean by this? When you start a pearl farm in a location, you begin with a resource that has already been “pillaged & plundered”, probably for hundreds, if not thousands, of years. As an example, we have the pearl fisheries of the Persian Gulf -whose pearls were adorning...
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  • Tahitian Pearls

    Tahitian Pearls Defined

    Tahitian pearls are bead-nucleated pearls grown in the gonad of the Pinctada margaritifera mollusk in French Polynesia.



    Tahitian Pearls - Among the Most Beautiful in the World

    Tahitian pearls are produced in the black-lipped oyster Pinctada margaritifera, in and around Tahiti and the French Polynesian islands. This oyster itself is quite large - sometimes over 12 inches (30 cm) across and weighing as much as 10 pounds (4.5...
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    Last edited by CortezPearls; 06-10-2021, 12:23 AM.

  • Cultured Pearls

    Cultured Pearls

    Cultured Pearls Defined

    A cultured pearl is any pearl grown with the influence of human intervention.

    Cultured Pearl Formation A pearl is formed when a small irritant or parasite penetrates and lodges in the mantle tissue of a mollusk. In response, a substance called nacre is secreted, and the creation of a pearl begins. Nacre is a combination of crystalline and organic substances. The nacre builds up in layers, as it surrounds the irritant to protect the mollusk, and after a...
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    Last edited by CortezPearls; 06-08-2021, 03:58 PM. Reason: Edited text and added photos

  • A review: The History of Pearls in the Gulf of California, Mexico Part 4

    A review: The History of Pearls in the Gulf of California, Mexico Part 4

    ENVIRONMENTAL AND SOCIAL IMPACT OF THE CCCP

    There was a positive ecological aspect of this venture: the pearl farm itself acted as a gigantic breeding station for the pearl oysters. When you consider that this farm contained between 8 to 10 million pearl oysters and let us say that at least one-third of these had reached ****** maturity (2.6 to 6.6 million individuals), it is very evident to see the astounding positive impact that this commercial operation would have in restocking...
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  • A review: The History of Pearls in the Gulf of California, Mexico Part 3

    A review: The History of Pearls in the Gulf of California, Mexico Part 3

    THE FIRST COMMERCIAL PEARL OYSTER FARM IN THE WORLD

    It is at this particular crossroad that we find a Mexican-French Medical Doctor by the name of Gastón Vivčs, attempting what very none had tried before: initiate a commercially viable, large-scale pearl oyster farm to produce shell and pearls. The Vivčs family owned a pearl fishing armada in La Paz, Baja California Sur, and they were experiencing diminishing profits every year, thus wanting to revert this trend we find Gastón Vivčs...
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  • A review: The History of Pearls in the Gulf of California, Mexico PART 2

    The arrival of the Iberian Conquerors

    The Native Nations had no real interest in establishing a commercial venture in pearl fishing and we understand little to nothing of the way they fished for pearls, since most of the information was either lost or destroyed during the conquest of Mexico. The rich plunder of the Conquistadores was sent to Spain and later dispersed all over Europe. The most significant information we have on the subject comes from the period of colonization of northwestern...
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  • A review: The History of Pearls in the Gulf of California, Mexico - PART 1

    A review: The History of Pearls in the Gulf of California, Mexico
    By Douglas McLaurin-Moreno


    Since unrecorded time, man has obtained many bounties from the world’s oceans: food, shells, corals, sponges, seaweeds, and the most desirable of all of these were the beautiful mother-pf-pearl shells and their valuable treasure, Pearls.

    Mexico has four species of pearl oysters inhabiting its coasts, two -the larger sized- on the Pacific side: the Panamic Black Lip...
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  • Debunking a Widely Held Japanese Myth

    By C. Denis George Abstract by Anna Kerrig

    Historical Aspects on the Early Discovery of the Pearl Cultivating Technique Japanese scientists, Nishikawa and Mise are typically recognized for discovering the technology that led to cultivating spherical pearls. C. Denis George was an Australian enthusiast who challenged the credit given to the Japanese for this discovery. George argues that Nishikawa and Mise's step-father were first exposed to successful pearl cultivation at Thursday...
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    Last edited by CortezPearls; 06-15-2021, 04:01 PM. Reason: added photo of WSK
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  • Sustainable Pearls - Links Section
    by CortezPearls
    This section will have articles to Sustainable Pearl Farming and other related news.

    "The Sustainable Corner" Series is here:

    1. Introduction
    2. Sustaining Life with Pearl Farming
    3....
    08-02-2021, 06:24 PM
  • VI. Common Mabe Pearl Varieties - Abalone Mabe
    by CortezPearls
    C. Abalone Mabe (Genus Haliotis)

    Abalone (or “Ear-shells” as they are sometimes referred) are not pearl oysters at all; they are, instead, an ancient group of marine “snails” known as Archaeogastropoda (Ancient belly-crawlers). Because they are snails, they move about their environment, living on rocks and grazing on brown seaweeds (kelp). Another interesting difference with pearl oysters is that these animals have a temperate water affinity: they prefer cold...
    07-21-2021, 12:23 AM
  • VI. Common Mabe Pearl Varieties - B. Mother-of-Pearl Oysters (genus Pinctada)
    by CortezPearls
    B. Mother-of-Pearl Oysters (genus Pinctada)

    Black Lip Pearl oysters (Pinctada margaritifera)

    Black lip pearl oysters are known mainly for their beautiful, dark, cultured pearls but they have also been used to produce Mabe pearls, although in not great numbers.

    Part of the production strategy for Mabe pearls in French Polynesia and Fiji is at the very last part of the pearl producing cycle:
    Cultured (loose) pearls are produced for up to three cycles (first,...
    07-21-2021, 12:14 AM
  • VI. Common Mabe Pearl Varieties - “Rainbow Lipped Pearl Oyster”
    by CortezPearls
    “Concha Nácar” or “Rainbow Lipped Pearl Oyster”

    This species of pearl oyster (Pteria sterna) has been used to produce both cultured loose pearls and Mabe pearls in Mexico. The first Mabe pearls were obtained back in 1994 and were the main product for the Guaymas based pearl farm until loose cultured pearls became more common (2002). Since 2010, “Cortez Mabe” have been produced in a steady number between 1 to 5-thousand pearls per year. There is an experimental Mabe pearl...
    07-21-2021, 12:06 AM
  • VI. Common Mabe Pearl Varieties - A. Winged Pearl Oysters (genus Pteria)
    by CortezPearls
    There are several varieties of commercially grown Mabe Pearls that can be found at jeweler’s displays or on online vendors, but many have become rare over the years. The three main sources for Mabe pearls today are:
    1. Winged Pearl oysters from genus Pteria, including the “original” Mabe-gai (Pteria penguin) and the “Rainbow-lip” pearl oyster (Pteria sterna).
    2. Mother-of-Pearl oysters from genus Pinctada, mainly from the larger Silver (Pinctada maxima) and Black (Pinctada margaritifera) lipped pearl
    ...
    07-20-2021, 11:59 PM
  • V. Processing Mabe or Natural Blisters
    by CortezPearls
    Since these pearls are not very useable in jewelry with the entire shell, they are processed: first they are cut from the shell, with the help of a handsaw, Dremel tool, core-drill or tile cutting saw. The type of tool will depend on availability and production volume, the first used mainly by occasional processing and the latter for commercial production.

    A lineup of the Mabe pearl process.

    Once the blister is separated from the shell, these are rinsed to remove grime,...
    07-20-2021, 11:44 PM
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