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Collection: 証書系列 Certified Collection




另外,亦有鑽石及寶石之證書,日本「Gem Grading System」及「Diamond Pro Service」,國際性的「Gemological International Laboratories」。

PT Pearls also sells top-quality certificated products, including:

One of the most recognizable pearl identification certificate by "Pearl Science Laboratory" (真珠科學研究所) which set up the most well-known gradings such as the Aurora Tennyo, Aurora Madama, and Aurora Venus.

The certificate issued by the "Pearl Institute Co., Ltd." includes the grade of Snow White Pearl.

The certificates for diamonds and gemstones by the Japanese "Gem Grading System" and "Diamond Pro Service", and the international certificates by "Gemological International Laboratories".

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