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Ting Diamond

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所有鑽石均附有GIA證書，您可以根據4C標準輕鬆評估鑽石品質。 GIA是一家非營利寶石學機構，制定了4C標準。其他寶石學機構的證書均與GIA分級標準類似 https://www.tingdiamond.com/en/gia-loose-diamonds/fancy-cut-diamond/princess-cut

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