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  • Pearl Surface

    Pearl Surface in Pearl Grading

    The surface cleanliness of a cultured or natural pearl has a direct correlation to its value. A pearl can never, according to rules set forth by the FTC, be graded as "flawless", but the degree or percentage of inclusions or surface imperfections can be measured by anyone with experience.

    What to Look for on a Pearl's Surface When grading pearls, the appearance of the surface of a pearl is one of the most important characteristics in determin...
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    Last edited by CortezPearls; 03-26-2021, 03:52 PM. Reason: Edited text and added images

  • Pearl Shapes

    Pearl Shapes Vary Widely

    Because pearls are natural organic gems created by a myriad of living organisms, they occur in a wide variety of shapes, many of which are quite unique and interesting. Also, cultured pearls tend to be rounder than natural pearls because (saltwater) cultured pearls usually have a bead inside that will help guide the shape.

    Some shapes are distinctively unique to certain species of mollusks, as is the case in Abalones (Haliotis spp) that commonly...
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    Last edited by CortezPearls; 03-26-2021, 04:30 PM. Reason: Edited text and added images

  • Pearl Sizes

    Pearl Sizes

    Pearl Size Is Measured in Millimeters

    A pearl's size is measured according to its diameter in millimeters. Sizes range from 1 millimeter or less, in the case of very tiny pearls, to as much as 20 millimeters (more than 3/4") for large South Sea pearls.

    The Average Pearl Size Today is 7 Millimeters Most pearls sold today, however, are in the 7.0 to 7.5-millimeter range. Akoya pearls greater than 8 millimeters are considered extremely rare. (The largest pearl an akoya oy...
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    Last edited by CortezPearls; 03-15-2021, 02:58 PM.

  • Pearl Farming

    Marine Pearl Farming Defined

    Pearl farming is the industry responsible for growing farm-raised pearl mollusks and producing cultured pearls. These cultured pearls make up nearly 100% of the pearls sold today.

    What Is Pearl Farming? Cultured pearls are grown on what are known as pearl farms. Depending on the variety of mollusk employed at the farm, these will be located in protected bays or in channels or in lakes, ponds or streams (for pearly freshwater mussels). In this cha...
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    Last edited by CortezPearls; 03-30-2021, 12:47 AM. Reason: Edited text, added more content and photos

  • Pearl Harvest

    The Pearl Harvest

    The pearl harvest is the pay-off for years of investment and arduous work. The harvest most-often happens during the winter months as the host mollusks' metabolism slows and nacre platelets become thinner as deposition decreases. This has proven to increase the luster upon harvest.


    Pearl Production Times Vary Cultured pearls are harvested from the pearl farms after a period that may stretch from 8 months to 6 years. Akoya pearls are typically c...
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    Last edited by CortezPearls; 03-30-2021, 03:40 PM. Reason: Edited text and added images and videos

  • The Pearl Nucleus

    Pearl Nucleus Defined

    A pearl nucleus is a bead or other object implanted into the gonad of a marine mollusk or into an existing pearl sac in the gonad or mantle of a freshwater mussel around which nacre deposition occurs.



    The Pearl Nucleus and Nucleation/Grafting Pearl farms vary depending on the type of mollusks being produced. But the one thing all pearl farms share is the process of nucleating the mollusks to produce a pearl. Every cultured pearl produ...
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    Last edited by CortezPearls; 03-30-2021, 04:16 PM. Reason: Edited text and added photos

  • Pearl Nucleus Composition

    The Proper Pearl Nucleus

    A pearl nucleus is usually made using freshwater mussel shells that has been cut and ground into a polished, spherical bead. Other nuclei do exist, these have been produced from other marine shells, such as from the large black and silver-lipped pearl oysters and from Bironite TM.

    Nacre Deposition will occur over any Solid Object An oyster's "pearl sac" will secrete nacre over nearly any solid object. This has led to countless attempts to nucleate...
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    Last edited by CortezPearls; 03-24-2021, 11:56 PM. Reason: Edited and improved text, added images.

  • Pearl Nucleus Manufacturing

    Manufacturing the Pearl Nucleus

    A pearl nucleus is manufactured from freshwater mussel shell which has been worked into a perfect sphere and polished.


    The Nucleus is an Essential part of Perliculture The nucleus of a pearl, although it is not typically visible in a harvested pearl, is extremely important in the culturing process. The nucleus is the seed that the oyster "impregnates" to create and produce the cultured pearl. Without high quality nucleus it is impos...
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    Last edited by CortezPearls; 03-30-2021, 04:29 PM. Reason: Edited text and added photos

  • Famous Pearls part 1

    Famous Pearls in History Pearls are among the world's oldest gems, and from the time they were first discovered, they have remained some of the world's most sought-after and most revered gems. Throughout time, there have occasionally been a few pearls discovered that stand out among even these rare gems. Many of these famous pearls, some of them thousands of years old, are still around to be admired today. These pearls are remarkable reminders of the rich pearl history. ...
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    Last edited by CortezPearls; 03-30-2021, 04:57 PM. Reason: Edited text and added photos

  • The History of Pearls

    The 4000 Year History of Pearls

    Pearls have been prized and collected for more than four thousand years, giving them the title of the world's oldest gem.

    The Early History of Pearls Pearls have long been treasured and highly valued in many cultures throughout history. As far back as 2,300 BC, Chinese records indicate that pearls were the prized possessions of (and gifts to) royalty. In India, ancient Hindu texts repeatedly refer to pearls, stating in one place that the go...
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    Last edited by CortezPearls; 03-15-2021, 04:38 PM.
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  • 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
  • About Pearl-Guide.com
    by Kevin Canning
    More than 10,000 Members Strong
    Founded in 2003 with the addition of a community forum in 2004, Pearl-Guide.com is a friendly group of pearl dealers, farmers, traders, wholesalers, hobbyists, authors, and consumers. With members from around the world engaged in daily conversation, Pearl-Guide.com is the largest community of pearl enthusiasts in the world.

    World's Only Open Pearl Discussion Forum Pearl-Guide.com exists for the benefit of consumers and the trade. With the world...
    07-24-2014, 07:33 PM
  • The French Blue
    by WayneCMS
    By Richard Wise I was fortunate enough to get an early Kindle edition of Richard Wise's newest masterpiece The French Blue. I also own a copy of Wise's Secrets of the Gem Trade, and it is one of the very few gem books that I've read cover to cover, not just skipping ahead to the sections about pearls. The French Blue is a completely different kind of work. It is a novel that begs to be read slowly, but once one becomes entranced in the story, it is nearly impossible to put down. Not for the f...
    07-21-2014, 10:36 AM
  • Pearl-Guide.com Forum Policies and Rules of Conduct
    by WayneCMS
    Pearl-Guide.com, its owners, moderators and administrators reserve the right to:
    • Remove or move any content for any reason at our sole discretion
    • Modify or edit any content for any reason at our sole discretion
    • Suspend or ban any members for any reason at our sole discretion
    Use of Pearl-Guide.com will constitute acceptance of the following policies and rules of conduct. These policies and rules of conduct may change periodically. The forum on Pearl-Guide.com is presented "as is" with no w...
    07-21-2014, 10:31 AM
  • Pearl World - The Publication
    by WayneCMS
    Pearl World Journal is no longer being Published!

    Pearl World Journal

    Devoted to covering the pearl industry, Pearl World: The International Pearling Journal is the only English language publication of its kind. For 17 years the journal has covered every aspect of the pearling industry, from harvests, production, auctions, wholesaling, and education, to retail designing end consumer marketing.

    The Publication The journal is published solely for those inter...
    07-21-2014, 10:29 AM
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