Regarding the description of Pearl Identification Report

Our Pearl Identification Report described accurately and plainly gets high evaluation from the person who loves beauty of the pearl as well as the pearl industry.


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1namber  The name of mother-of-pearl shellfish
2namber  Description of article(s), Size, etc
ネックレス Necklace リング Ring ペンダント Pendant
イヤリング Earring ピアス Pierce ブローチ Brooch
3namber  Provision with respect to disclosure of the pearl
Methods of bleaching and tinting in natural way to extract latent beauty of the pearl.
Methods to change color and appearance of the pearlchemically and / or physically in order to move toward
the nature of the pearl.
4namber  Comment
 <Example> ●花珠真珠と認めます : "Hana-dama" quality pearl
Ultrasonography The thickness of pearl layer is measured by using the supersonic.We can judge the mother of pearl with the thickness of the pearl layer.
The pearl’s color is resolved into the wavelength and measured with the special equipment. Accordingly, we can judge if the pearl is dyed. This is also used for judging Black TAHITI pearl.
Naked eye
Appraisal of flaws on the pearl surface and uniformity of a strandis made by visual judgment.
Inspection by
light penetration
With strong light penetrating through a pearl we can
observe the inside and judge whether blue pigment is natural or dyed.
Microscopy By observing pearl surface pattern we judge if it is a genuine or a fake, at the same time if it is dyed.
Additionally, by fluorescence check and an X-ray check we can judge mother of pearl and pearl with or without nucleus.