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“Pearl Value Factors. While there is no international standard for grading pearls, there is a system that is commonly used to evaluate these beautiful colored gemstones. Developed by the Gemological Institute of America (GIA), the world’s largest non-profit institute of gemological research and learning, this grading system considers seven pearl traits when determining value. They are: size, shape, color, luster, surface quality, nacre quality, and matching. Let’s take a look at each one as it relates to the beautiful cultured pearl. ”

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Miley cyrus old Pearls can be as small as a pinhead or nearly as big as a golf ball, but, of course, somewhere between these two extremes is the norm.

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Size is determined by many factors. These include the size of the animal that produces the gems, the size of the implanted bead, the length of time the oyster or mollusk was allowed to form the pearl, the climate and conditions of the environment, and the health of the animal that produced the pearl.