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Pearl Quality |
Pearl term, glossary LUSTER Luster is the quantity and quality of light reflected from the surface of a pearl. High luster pearls also have a deep seated glow. The luster of a good quality pearl should be bright and not dull. You should be able to see your own reflection clearly on the surface of a very high luster pearl. Reflected images of overhead lights are crisp and distinct in higher luster pearls while they are smudgy and washed-out in the dull ones. Higher luster pearls are most valuable. BODYCOLOR Bodycolor is the basic color of a pearl. Tbe most common bodycolors are white and cream. White and pink command the highest value. SHAPE Shape is important in judging pearls. The rounder a pearl is, the higher its value. Baroque pearls have irregular, distorted shapes. OVERTONE Overtone(s) are the colors that overlie the bodycolor. Pearls with ros?or silver overtones have the highest value. Blemish A blemish is a defect found on the surface of the pearl. Minor blemishes include spots, bumps, pits and wrinkles, and can affect a pearl's price. Major blemishes, which can affect the durability of a pearl as well as its price include cracks, holes and chips. Button A button is a dome-shaped pearl with a flat bottom. Choker A choker is a pearl necklace that is 16 - 18 inches in length. Circles Circles are concave, concentric rings found on the surface of a pearl. Clean Clean refers to the absence of blemishes on the surface of a pearl. Color Color is a quality factor used to describe the color of a pearl. Collar A collar is a pearl necklace that is 10 - 13 inches in length. Grafting Grafting is the human insertion of an irritant into a mollusk in order to produce a cultured pearl. Lustre Luster refers to the combination of surface shine and depth of inner light refraction in a pearl. Lustre is one of the main factors of pearl quality. Mantle tissue The layer of tissue adhering a mollusk to it's inner shell. Matching Matching refers to using luster, surface, shape, color, and size to match several pearls in order to create a piece of pearl jewelry. Momme Momme is the weight measurement for pearls in Japan. One momme equals 3.75 grams or 18.7 carats. Nacre Nacre is the calcium carbonate substance secreted by a mollusk as a defensive measure against a foreign irritant in its body. Nucleus Nucleus is a small piece of shell from one mollusk used as an irritant for another mollusk. Nucleation Also called grafting or implementation, the process of inserting an irritatant (nucleus) into the body of a mollusk so that it will secrete nacre to cover it, consequently producing a cultured pearl. Opera An opera is a pearl necklace 28 - 32 inches in length. Princess A princess is a pearl necklace 17 - 19 inches in length. Rope A rope is a pearl necklace over 45 inches in length. Shape A quality factor used to describe the shape of a pearl. A round pearl is the most prized shape in the industry. Sorting Separating pearls by surface, shape, color, and size prior to the matching process. Surface A quality factor indicating the amount of blemishes on a pearl, ranging from clean to heavily-blemished. |
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