






【COLLECTIBLE】"Umihotaru" Akoya Pearl(No. SU58318)
Jewelry that allows you to interchange pearls and base parts with a screw structure
<COLLECTIBLE PEARL>
Pearls are processed with K18 screw fittings embedded in them.
Enjoy the full individuality of various colors, shapes, and single pearls with your favorite base parts.
COLLECTIBLE PEARLs will be packaged in a specimen bottle, with a cleaning cloth and quality guarantee card enclosed.
◆Please choose your base parts from here.
◆You can view the production story here.
【Pearl Details】
SQ (SPECIAL PEARL QUALITY)
| NUMBER: SU58318 | ORIGIN: Tsushima, Japan |
| SHAPE: Baroque | SIZE: approx.8-9mm |
| COLOR: Blue | GRADE [Nacre]: Thick |
| GRADE [Luster]: AA - AAA | GRADE [Blemishes]: AAA |
A drop-like pearl with an impressive deep blue color.
The blue, subtly tinged with gray, shows a calm expression like a quietly swaying sea.
Under strong light, such as in the sun, the vibrant blue shines, creating a different impression.
When paired with white clothing, its color stands out even more, enhancing its beauty.
※What is "Umihotaru" (sea firefly)?
Naturally colored blue baroque Akoya pearls, cultivated by one of Japan's leading farmers with 120 years of history in Tsushima, Nagasaki Prefecture.
Only pearls with a mysterious blue, as if reflecting the sea of Tsushima, are named "Umihotaru" and certified as a single pearl brand.
The beautiful interference colors of Akoya pearls are created when organic components of the shell enter the nacre layer.
Natural blue colors are accidental, so it is rare and very valuable for them to appear beautifully covering the entire pearl.
While naturally colored blue Akoya pearls are said to be prone to color change, "Umihotaru" pearls havea thick nacre layer and a deep color, and undergo preservation processes under strict management to minimize color change.
Customers who purchase these pearls will receive a card certifying them as Umihotaru.
You can read an interview with the Umihotaru producers here.
◆For more details on pearl quality and grading, please check the Our Pearls page.
【Exclusive Parts】*Exclusive parts are sold separately. Exclusive parts are available here
We offer exclusive rings, earrings, etc., made of K18 Yellow Gold or Pt900, to which COLLECTIBLE PEARL can be attached.
A collection offering unique and valuable pearls in screw-type jewelry.
The screw structure allows for free combinations of pearls with various base parts such as earrings and rings.
【Nickel-Free】

The metal fittings (K18, PT900) are "nickel-free," meaning they contain no nickel, which is a common cause of metal allergies.
*This does not guarantee that all individuals will be free from allergic reactions (allergy-free). If you experience any skin abnormalities, discontinue use immediately and consult a dermatologist.
【Handling of Screw Parts】

This product features "anti-loosening processing" on the screw threads of the screw parts.
*Some parts are unprocessed.
This processing involves coating the screw threads with a thin, elastic film to prevent screws from loosening due to vibrations, etc., through friction.
However, as it does not lock the screws, loosening may occur depending on the usage conditions.
When using, please ensure the screws are tightened securely before wearing, and periodically check for any loosening during wear to ensure safer use.
This product uses K18 or Pt900.
Compared to materials like iron, these metals are not as hard, so the screw parts may wear down or break depending on usage.
Please be careful not to apply excessive vertical force when screwing in the parts.
Should the screw part deteriorate to the point where it becomes difficult to use, please contact us for repair or a proposal for remaking it into a different piece of jewelry.
Please contact us via the contact page on our website.
【Notes】
・When cleaning the metal parts, be careful not to touch the screw part or the pearl.
・Pearls may change color or crack if left in a high temperature and humidity environment for a long time. Always store them in a place out of direct sunlight.
・Pearls are soft and easily scratched. Store them in a case separately from other accessories to prevent contact.
※If you wish for gift wrapping, please add it to your cart from here.
*Each pearl sometimes has blemishes and flaws on the surface which actually indicate that a pearl is authentic. *For any enquiries and further information about our products, please do not hesitate to contact us before the purchase. *The pearls and jewelries on the image may slightly differ from their actual color, texture and design due to the display resolution on different devices.