UMU ―Jewelry born of Japanese Artisan Hands.






Purposely minimalist, stripped of all excess.


The sculptural beauty of casting
and the delicate lines crafted by artisans.
Stainless steel jewelry filled with the dedication of
our in-house workshop delivers durability, lightness,
and a comfortable feel against the skin.
Bring a quiet, resolute strength and an effortless,
personal touch to your unadorned everyday style.






― Layering Ideas ―
Enjoying layering, in my own unique balance.




― Why UMU ―


1 Elegance Meets Delicacy
By combining casting techniques with artisan handcrafting, we achieve fine, supple lines and forms that were previously difficult to express with conventional stainless steel. Finished with delicate textures and a matte touch, each piece adds a quiet yet radiant glow to your unadorned everyday life.

2 Skin-Friendly & Durable Stainless Steel
Hypoallergenic
Fade-resistant with a long-lasting shine
Scratch-resistant and durable


3 Uncompromising Quality from Our In-House Workshop
Each piece is carefully finished by hand by skilled craftsmen in our in-house workshop. We focus on smooth surface textures to ensure comfortable wear against the skin, delivering pieces crafted to be cherished for a lifetime under meticulous quality control.