Announcement

Collapse
No announcement yet.

Glossary of Pearl Terms C

Collapse
X
Collapse
  •  

  • Glossary of Pearl Terms C

    Here is a list of pearl terms that might help you better understand this site and the discussions within the community forum. It is compiled from multiple sources and we believe it to be one of the most comprehensive lists available.

    A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

    cabochon: In gemology, a usually round or oval shaped gemstone with a domed top and flat bottom; hence, a pearl of that shape.

    calcareous concretion: Whether nacreous or not, all pearls are calcareous concretions.

    calcite: A crystalline form of natural calcium carbonate that, together with aragonite and conchiolin, makes up the structure of nacre.

    calcium carbonate: Pearls are composed of calcium carbonate (CaCO3) and other elements and substances.

    candling: Examining a pearl in front of a focused light source to determine if it shows the layered structure that proves it contains a bead nucleus.

    carat: A weight measure sometimes used for natural pearls. It equals 4 grains, 200 milligrams or 0.007054 oz.

    Cassis pearl: Yellowish brown pearl produced by gastropods of the genus Cassis.

    cave pearls: Stalactite pearls of a brown color, concentric layers and, sometimes, a pearly luster.

    Ceylon pearl mollusk: The Pinctada radiata mollusk known for producing natural pearls in the Gulf of Mannar, the Red Sea and the Persian Gulf. According to some taxonomists, Pinctada radiata is a synonym for Pinctada imbricata, Pinctada fucata and others.

    chau: Historical unit of weight used in the natural pearl trade in India, also called chov.

    chaplets: Line extensions of a pearl farm's long line system that are secured to the shells.

    chemical dyes: A method used to alter the natural color of a cultured pearl.

    cherry: A reddish overtone often found on pearls produced by Pinctada margaritifera.

    chloride vapor deposition: A superficial pearl coating/coloring agent experimented with in the 1960s.

    choker necklace: A strand of pearls that lies above the collar bone, 14 to 16 inches in length (35 to 41 cm).

    chov: See chau.

    CIBJO: (Confederation Internationale de la Bijouterie, Joaillerie et Orfevrerie), also known as the World Jewellery Confederation, is an international confederation of jewelry, gemstone, horology, and silverware trade organizations. CIBJO publishes The Pearl Book: Natural, Cultured & Imitation Pearls: Terminology & Classification.

    circled pearl: Pearl with raised concentric rings around its surface, thought to be produced by the developing pearl rotating during growth.

    clam pearl: Non-nacreous pearl found in clams.

    coating: A layer of artificial or natural substance applied to pearls to enhance luster, surface quality or to produce other optical effects.

    coconut pearl: So-called "pearl" said to be found in coconuts.

    coin pearl: Bead-and-tissue-cultured pearl shaped like a coin.

    collar: A strand of pearls that measures 10 to 13 inches (25 to 33 cm).

    composite cultured blister pearl: See mabe.

    composite pearl: Two separate pearls conjoined to give the appearance of a single pearl.

    concentric structure: The layering of calcium carbonate crystals that is characteristic of natural pearls, tissue-cultured pearls, bead-cultured pearls, and the nacre layer of bead-and-tissue-cultured pearls.

    conch pearl: Non-nacreous pearl produced by the conch shell.

    conchioline: The organic substance that acts like glue, binding calcite and aragonite crystals together.

    condari: Historical Chinese unit of weight used to evaluate pearls; associated with the weight of a grain of wheat or rice.

    cool hues: Colors from reddish purple to greenish blue to yellowish green from the GIA color reference chart.

    coque de perle: Imitation pearl made from the Nautilus shell (also see Osmena pearl).

    corn flake shape: Second generation pearl that the Chinese mistakenly call "keshi". They are shaped like breakfast cereal corn flakes.

    Cortez pearls: Trade name for the pearl cultured produced in the "Rainbow Lip Pearl Oyster" or Pteria sterna in the Gulf of California, Mexico, which is also called the Sea of Cortez.

    CP&J City: China Pearls and Jewlery City. The world's largest pearl and jewelry trade center; in Shanxiahu, Zhuji, Zhejiang, China. The first phase opened in April 2008.

    Cristaria plicata: The cockscomb mussel first used in Japan and China in cultured freshwater pearl production.

    cross shape: Tissue-cultured pearl grown in the shape of a cross.

    cultured pearl: Pearl produced by the human insertion of a bead, a tissue graft, or a bead and tissue graft in a freshwater mussel or saltwater mollusk.
    Last edited by CortezPearls; 03-15-2021, 04:53 PM.
      Posting comments is disabled.

    Categories

    Collapse

    article_tags

    Collapse

    Latest Articles

    Collapse

    • 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
    Working...
    X