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  1. M

    PSL certification

    Thank you, James and pardon the confusion. English is not my first language. I sent you a DM with the correspondence between vendor and myself.
  2. M

    PSL certification

    Thank you! I did follow up with a question of whether it is one or the other and this was their response: "The Tokyo Pearl Science Laboratory (TPSL) certificate exclusively authenticates and evaluates Akoya pearls, certifying all the pearls in the set, but not the entire piece of jewellery...
  3. M

    PSL certification

    Hello, first time posting, so I do apologise if this has been asked and answered. I am in the process of purchasing my wife an anniversary gift, a set of hanadama grade necklace, bracelet and earrings. The vendor's website has an option to purchase a PSL certificate. I received this response...
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