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  2. List of pearls by size - Wikipedia

    en.wikipedia.org/wiki/List_of_pearls_by_size

    The Pearl of Lao Tzu for a long time thought to be the largest pearl, but claims about its size and much of its history were found to be fabricated by a conman by the name of Victor Barbish. [2] Other pearls like the Centaur Pearl, most likely the largest gem pearl at 856.58 carats (171.316 g), have just recently emerged from private collections.

  3. Pearl - Wikipedia

    en.wikipedia.org/wiki/Pearl

    The original Japanese cultured pearls, known as akoya pearls, are produced by a species of small pearl oyster, Pinctada fucata martensii, which is no bigger than 6 to 8 cm (2.4 to 3.1 in) in size, hence akoya pearls larger than 10 mm in diameter are extremely rare and highly priced. Today, a hybrid mollusk is used in both Japan and China in the ...

  4. Pearl circle - Wikipedia

    en.wikipedia.org/wiki/Pearl_circle

    Roman Aureus (36 BC AD Z.) with incompletely embossed pearl circle Castilian Maravedi (c 1475) with bead and reel. A pearl circle (also pearl rim or pearl ring; French grènetis, German Perlkreis, Perlrand, Perlreif) is a circular arrangement of fine, raised points or "pearls" on the edge of coins; [1] it also sometimes appears in round or oval frames.

  5. Giga Pearl - Wikipedia

    en.wikipedia.org/wiki/Giga_Pearl

    The Giga Pearl wrapped in the embrace of a 22k gold octopus. The Giga Pearl [1] holds the record as the largest certified non-nacreous pearl in the world. [2] The pearl weighs in at 27.65 kg (61.0 lb; 975 oz) and measures 39.37 cm × 22.86 cm × 20.95 cm (15.50 in × 9.00 in × 8.25 in), [3] which is four times larger than the Pearl of Lao Tzu (formerly the Pearl of Allah) which weighs 6.4 kg. [4]

  6. Huachuanqian - Wikipedia

    en.wikipedia.org/wiki/Huachuanqian

    The exact origins of the first appearance of Huachuanqian is difficult to determine as there are no written records that document them. [12] However, archeological evidence has determined that the earliest known cash coins with "flower" holes had the inscription Ban Liang (半兩) and could have been cast either during the Qin dynasty period or by the succeeding Han dynasty. [12]

  7. Majorica pearl - Wikipedia

    en.wikipedia.org/wiki/Majorica_pearl

    Majorica imitation pearls are man-made on solid balls, likely made of glass, that are coated with a proprietary coating that is made in part from fish scales. [1] The coated nuclei are then dried and polished, and then dipped in a chemical (possibly cellulose acetate and cellulose nitrate) to harden the surface and guard against discoloration, chipping, and peeling.