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Pearl Education

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  • Pinctada chemnitzii

    Pinctada chemnitzii (Phillippi, 1849)

    Distinguishing Characteristics
    P. chemnitzii is often confused with the "Akoya Complex" or Pinctada imbricata species.

    Ecology and Habitat
    P. chemnitzii is found on the Northern coast of Australia and in the South and East China Sea. It is also native to the Japanese owned Ryukyu Islands.

    P. chemnitzii in Pearls
    For over forty years, P. chemnitzii has been used in China for pearl culture. The Japanese...
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    Last edited by CortezPearls; 06-10-2021, 03:18 PM. Reason: added image and edited larger chunks of the text

  • Pinctada capensis

    Pinctada capensis (Sowerby, 1872)

    Distinguishing Characteristics

    The shells of P. capensis look remarkably similar to Pteria shells. They have a longer shape that is slightly deformed. When both halves are open, the silhouette of the shell resembles a "C" shape. The luster of the inner shell is dull, making the nacre appear milky white. Sometimes a yellowish grey/bluish tint is possible. Shells can measure up to 10 cm in length.

    Ecology and Habitat ...
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    Last edited by CortezPearls; 06-10-2021, 04:03 PM. Reason: Added image, deleted non working hyperlinks

  • Pinctada albina

    Pinctada albina (Lamarck, 1819)

    Distinguishing Characteristics

    P. albina is known as the smaller Australian Oyster. In the 1960's, studies revealed that there were local differences between the color and size of the shell. Because the differences were determined to be geographical discontinuities, the species was divided into two subspecies: P. albina albina (Lamarck) and P. a. sugillata (Reeve), which represent the western and eastern subspecies. The species is small, o...
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    Last edited by CortezPearls; 06-08-2021, 07:30 PM. Reason: photo

  • Natural Pearls

    Natural Pearls Defined

    Natural pearls are calcium carbonate secretions which form within mollusks without human intervention.

    Natural Pearls Accidents of Nature Natural pearls are formed randomly and really are simple accidents of nature. When a certain type of irritant, such as a parasite, becomes lodged in the tissue of a mollusk, the animal responds by secreting a calcium carbonate substance called nacre to coat the intruder and protect the mollusk. Over a period of...
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    Last edited by CortezPearls; 06-08-2021, 07:20 PM. Reason: added photo

  • Melo Melo Pearls

    Melo Melo Pearls Defined

    A melo melo pearl is a non-nacreous, natural calcareous concretion produced by the marine gastropod melo melo.

    Melo Melo Pearls are Non-nacreous or "Porcelaneous Pearls" The melo melo "pearl" does not come from an oyster or mollusk, but comes instead from the melo melo marine snail, which is found in the waters of the South China Sea, as far south and west to Singapore and Andaman Sea. Like conch pearls, the melo melo gem is not actually a nacreous ...
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    Last edited by CortezPearls; 06-08-2021, 06:45 PM. Reason: added image

  • Conch Pearls

    Conch Pearls Defined

    A Conch Pearl is a non-nacreous, porcelaneous pearl produced by the "Queen Conch" (Lobatus=Strombus gigas). "Conch pearls" -also known as "jellybeans" in the trade- often exhibit a unique flame-like pattern due to their concentrically arranged calcium carbonate platelets, arranged in a lamellar fashion. This beautiful optical effect is much harder to say and understand than to admire: the pearls seem to have "tongues of fire" within their interior. ...
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    Last edited by CortezPearls; 04-05-2021, 11:49 PM. Reason: Added images and video edited text!

  • Abalone Pearls

    Abalone Pearls Defined

    Abalone Pearls are natural pearls found in the gastropod mollusk Haliotis. The pearls are most often an iridescent blue color, and the most common shape is the baroque.

    Abalone Pearls, Some of the Most Beautiful Pearls in the World

    Abalone pearls are considered by many to be some of the most beautiful pearls in the world, and they are also some of the rarest. Abalone pearls come from the gastropod mollusk, Haliotis. The inner mother-of-pearl...
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    Last edited by CortezPearls; 06-08-2021, 06:50 PM. Reason: added photo

  • Today's Market for Tahitian Pearls

    Tahitian Pearls, The Early Years

    Tahitian pearls retained popularity throughout the South Pacific as a gem of beauty and rarity, but the pearls were, for much of their early years, unheard of in Western markets.

    Jean-Claude Brouillet Starts a Tahitian Pearl Farm It was not until businessman Jean-Claude Brouillet purchased a South Marutea atoll and started a Tahitian pearl farm in 1975 that Tahitian pearls began to infiltrate the world market. Brouillet began working with a we...
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    Last edited by CortezPearls; 06-08-2021, 07:08 PM. Reason: image added

  • Tahitian Pearl Farming

    Culturing Tahitian Pearls
    By Josh Humbert of Kamoka Pearls (

    Tahitian pearls are cultured in lagoons surrounded by atolls in French Polynesia using the Pinctada margaritifera mollusk (pearl oyster).

    Collecting the Baby Oysters Oysters start their lives as free-swimming plankton in the lagoon. After three weeks of swimming, they begin to grow shells and search for a surface onto which they can attach. Farmers set out collectors during stra...
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    Last edited by CortezPearls; 06-08-2021, 07:03 PM. Reason: added images

  • South Sea Pearls

    South Sea Pearls Defined

    A South Sea pearl is pearl produced by the Pinctada maxima mollusk. They are currently cultured in areas throughout the Indian and Pacific Oceans, primarily in Australia, the Philippines, Indonesia and Myanmar.

    South Sea Pearls - Among The Largest In The World South Sea pearls are among the largest commercially harvested cultured pearls in the world. The average size of a South Sea pearl is 13 mm, with most harvests producing a range of ...
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    Last edited by CortezPearls; 03-15-2021, 11:53 PM.
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  • The Genus Pteria Scoppoli 1777
    by CortezPearls
    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.


    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...
    06-18-2021, 06:03 PM
  • The Sustainability Corner – Issue 2
    by CortezPearls
    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...
    06-09-2021, 11:34 PM
  • A review: The History of Pearls in the Gulf of California, Mexico Part 4
    by CortezPearls

    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...
    05-27-2021, 01:40 AM
  • A review: The History of Pearls in the Gulf of California, Mexico Part 3
    by CortezPearls

    It is at this particular crossroad that we find a Mexican-French Medical Doctor by the name of Gastón Vivès, attempting what very none had tried before: initiate a commercially viable, large-scale pearl oyster farm to produce shell and pearls. The Vivès 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 Vivès...
    05-08-2021, 05:20 PM
  • A review: The History of Pearls in the Gulf of California, Mexico PART 2
    by CortezPearls
    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...
    04-05-2021, 03:26 PM
  • A review: The History of Pearls in the Gulf of California, Mexico - PART 1
    by CortezPearls
    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...
    03-18-2021, 03:04 PM