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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 ...

  3. La Peregrina pearl - Wikipedia

    en.wikipedia.org/wiki/La_Peregrina_pearl

    The original weight of this pear-shaped pearl was 223.8 grains, (55.95 carats, 11.2 g, almost .4 oz.). At the time of its discovery, it was the largest pearl ever found. In 1913 the pearl had to be drilled and cleaned to secure it firmly to its setting. After drilling and cleaning, the pearl's weight decreased to 203.84 grains.

  4. Quantum tunnelling composite - Wikipedia

    en.wikipedia.org/wiki/Quantum_Tunnelling_Composite

    QTC pills can be used as input sensors which respond to an applied force. These pills can also be used in devices to control higher currents than QTC sheets. QTC sheets are composed of three layers: a thin layer of QTC material, a conductive material and a plastic insulator. QTC sheets allow a quick switch from high to low resistance and vice ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Cultured pearl - Wikipedia

    en.wikipedia.org/wiki/Cultured_pearl

    White pearl necklace. A pearl nucleus or a bead for cultured pearl is a sphere (usually) or other shape (occasionally) formed only by cutting and polishing a nacreous shell used to accommodate the nacre secreted from a graft of mantle tissue, that eventually forms the centre of a beaded cultured pearl. [2]

  7. 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]

  8. Tahitian pearl - Wikipedia

    en.wikipedia.org/wiki/Tahitian_pearl

    This means that a Tahitian pearl can more easily grow to a larger-than-average size. [3] The cultured Tahitian pearl comes in various shapes, sizes, and colors; shapes include round, semi-round, button, circle, oval, teardrop, semi-baroque and baroque. [4] Because of their darker hues, Tahitian pearls are commonly known as "black pearls". [5]

  9. Pinctada maxima - Wikipedia

    en.wikipedia.org/wiki/Pinctada_maxima

    The South Sea pearl or Philippine pearl was declared by Philippine President Fidel Ramos as the national gem in 1996 through Proclamation No. 905. [ 1 ] [ 2 ] The oyster and pearl are depicted on the reverse side of the Philippine New Generation Currency Series 1,000-peso bill .