






【COLLECTIBLE】"Sea Firefly" Akoya Pearl (No. SU58281)
Jewelry that allows you to interchange pearls and base parts with a screw structure.
<COLLECTIBLE PEARL>
The pearls are embedded with K18 screw fittings.
Enjoy the unique character of each pearl in various colors and shapes with your preferred base parts.
COLLECTIBLE PEARLs are placed in a specimen bottle and come with a cleaning cloth and a certificate of authenticity.
◆Please choose your base parts here.
◆You can view the production story here.
【Pearl Details】
SQ (SPECIAL PEARL QUALITY)
| NUMBER: SU58281 | ORIGIN: Tsushima, Japan |
| SHAPE: Baroque | SIZE: aprx.8-9mm |
| COLOR: Blue-Green Tone | GRADE [Nacre Thickness]: Thick |
| GRADE [Luster]: AAA | GRADE [Surface Blemishes]: A |
This is a deep blue pearl with a strong blue-green tint.
Viewed from above, it shows a slightly strong pink overtone, and depending on the angle, iridescent colors such as yellow can be seen.
Although it is a baroque pearl, its surface is not rough and it has a shape close to a button.
Some growth lines are visible from the fitting to the side, hence the "A" grade for surface blemishes, but they are not significantly noticeable.
※What is "Umihotaru"?
Natural blue baroque Akoya pearls cultivated by one of Japan's leading farmers, established 120 years ago 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 iridescence of Akoya pearls is created when organic components from the shell enter the nacre layer.
Natural blue color is an accidental occurrence, so it is rare and very valuable for it to cover the entire pearl beautifully.
While natural blue Akoya pearls are prone to color changes, "Umihotaru" pearls have a thick nacre layer and deep color, and undergo a preservation process under strict management to prevent color changes.
Customers who purchase these pearls will receive a card certifying them as Umihotaru.
You can read an interview with the producers of Umihotaru here.
◆For more details on pearl quality and grading, please check the Our Pearls page.
※Pearls are fitted with K18YG screw receiver parts.
【Dedicated Parts】※Dedicated parts are sold separately. Dedicated parts can be found here
We offer dedicated rings and earrings made of K18 Yellow Gold or Pt900, to which COLLECTIBLE PEARLs can be attached.
A collection offering unique and valuable pearls in screw-type jewelry.
The screw structure allows for free combinations of pearls and various base parts such as earrings and rings.
【Nickel-Free】

The metal fittings (K18, PT900) are "nickel-free," made without any nickel, which is a common cause of metal allergies.
※This does not guarantee that no one will experience a metal allergic reaction (allergy-free). If you experience any skin abnormalities, please stop use immediately and consult a specialist.
【Handling of Screw Parts】

This product features a "loosening prevention treatment" on the threads of the screw parts.
※Some parts may not be treated.
This treatment involves coating the threads with a thin, elastic film, which helps prevent screws from loosening due to vibrations by increasing friction.
However, as it does not lock the screw, loosening may still occur depending on the usage conditions.
When using, please ensure the screw is securely tightened before wearing, and periodically check for any loosening while wearing for safer use.
This product uses K18 or Pt900.
Compared to materials like iron, these metals are not as hard, so the screw part may wear down or break depending on usage.
Please be careful not to apply excessive upward or downward force when screwing on the parts.
In the unlikely event that the screw part deteriorates and becomes difficult to use, please contact us. We can propose repair options or ideas for repurposing it as a different piece of jewelry.
Please contact us via the contact page on our website.
【Precautions】
・When cleaning the metal fittings, be careful not to touch the screw part or the pearl.
・Pearls may change color or crack if left in a high-temperature, high-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 away from other accessories to prevent damage.
※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.