Care & Maintenance
Thank you for your continued support of Tefu products.
Shell and buffalo horn are entirely natural materials formed by living organisms.
In addition to their visual characteristics, such as color and pattern, each material has its own properties in terms of strength and durability,
with variations from piece to piece.
We conduct strict quality inspections and remove any products with scratches, chips, breaks, cracks, excessive thinness, or other issues that may compromise their strength or appearance. However, due to the natural characteristics of these materials, changes in color, texture, or shape may occur with use.
To help you enjoy our products for many years to come, we kindly ask that you familiarize yourself with the characteristics of each material and follow the appropriate care instructions.
Please read our “Care & Maintenance for Tefu Products” guide and refer to it whenever needed.
Product Warranty
Some of our accessories feature metal fittings bonded to parts made from shell or buffalo horn. Although we carefully inspect both the quality of the fittings and the strength of the bond, the bond may occasionally loosen, or defects in the metal fittings may become apparent during use. In addition, naturally weaker areas within the internal structure of shell or buffalo horn may become apparent when pressure is applied while putting on or removing the accessory.
For this reason, we provide a one-year warranty from the date of purchase on accessories only. A warranty certificate is provided at the time of purchase.
The following products are covered:
Brooches, lapel pins, rings, pierced earrings, clip-on earrings, ear cuffs, necklaces, and Japanese-style accessories
Damage caused by mishandling, such as dropping the product from a height or striking it against a hard object, is not covered by the warranty.
If you discover a problem with the product but have lost your warranty certificate, or if an issue arises more than one year after purchase, please contact us directly.
Even for products not covered by the warranty, please contact us if you discover any defects upon receipt.
If a manufacturing defect or product-related issue is confirmed, we will take appropriate action, such as offering a return or replacement.
Materials Used in Metal Fittings
The materials used in our accessory fittings are as follows:
Earring Posts
Our earring posts are primarily made of titanium, with some made of gold-filled material. Titanium posts are gray, while gold-filled posts are gold in color, making them easy to distinguish visually.
Clip-on Earring Fittings
These are made with a brass or nickel-silver base and finished with rhodium-colored plating.
Necklace Chains
We offer two types of materials.
A: Surgical Stainless Steel
The chain and spring-ring clasp are made of surgical stainless steel. Only the small end bead is made of brass with rhodium-colored plating.
B: Silver
All components are made of sterling silver (925 silver).
How to Remove the Pin Clasp
Do not pull up the entire clasp by force. Move only the small upper disc to release the lock.

Keep the Larger Lower Disc Pressed Down
Keep the larger lower disc pressed down while moving only the smaller upper disc.

Gently Lift the Smaller Upper Disc
Keep the larger lower disc pressed down and gently lift only the smaller upper disc. This releases the lock, allowing the entire clasp to be removed. Imagine widening the gap between the upper and lower discs by about 1 mm.







