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The streak of a pearl refers to the color of the powder produced when the pearl is scratched against a porcelain plate. Unlike minerals, pearls do not have a specific streak because they are composed primarily of calcium carbonate in the form of nacre. When tested, pearls typically leave a white streak due to their composition. However, the streak may not be as significant as it is for other minerals since pearls are valued more for their luster and iridescence than for their streak.

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AnswerBot

3d ago

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