Model wearing KUMIKI hinoki masu necklace — world's smallest masu jewelry by FOMUS LLC

A Piece of Japan,
Made Yours.

The World's Smallest Masu Jewelry

Worn · Displayed · Given

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Introduction

Long before Japan was known for its skylines
and bullet trains, there was wood.
Hinoki cypress. Joined without a single nail.
Now, small enough to wear.

Artisan forming arare-gumi interlocking joinery on a hinoki cypress masu — traditional kumiki woodworking technique
Kumiki

Kumiki — Wood joined
without a single nail.

No adhesive. No fastener. Only precision.
From the pillars of Horyuji temple
to the artisan's toolbox -
thirteen centuries of quiet engineering.

The interlocking joints at each corner
are called arare-gumi.
This is kumiki in its purest form.
We carry the name with reverence.

The world's smallest hinoki masu — 1.6mm wall thickness, crafted by KUMIKI for wearable jewelry
Close-up of precision KUMIKI hinoki cypress masu craftsmanship — arare-gumi joinery without nails or glue
Hand-finished KUMIKI masu jewelry — one of maximum 30 handmade pieces produced per month by FOMUS LLC
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The Story of Masu

Masu — A vessel of prosperity.

A masu is a wooden cup carved from hinoki cypress,
born in the eighth century to measure rice.
Its name became a prayer:
masu - to increase, to prosper.

Set before shrines. Raised at weddings.
Filled with sake in the silence before a toast.
For thirteen centuries, the masu has held
what matters most to the Japanese people.

Now, in the world's smallest form.
Now, part of your day.

Traditional Japanese hinoki cypress masu with arare-gumi corner joinery — a 1,300-year-old symbol of prosperity
Aerial view of KUMIKI hinoki masu — Japanese craftsmanship jewelry inspired by 1,300 years of masu tradition
Wear it. Display it.

Two lives. One jewel.

365 days by your side.

Woman wearing KUMIKI Japanese masu necklace — hinoki cypress pendant with precious metal chain

Wear it

On the days you step out, it goes with you.

KUMIKI masu display case with silver hinoki cypress earrings on black marble — included with every KUMIKI piece

Display it

When you return, it becomes art in your room.

Collection

Collection

KUMIKI masu necklace in white — handmade Japanese hinoki cypress jewelry, 1.6mm wall thickness

Necklace

Necklace View Collection
KUMIKI masu earrings with blossom motif — Japanese hinoki cypress and precious metal, handmade in Japan

Earrings

Earrings View Collection
KUMIKI masu kanzashi hair pin — Japanese hinoki cypress hair ornament with gemstone accent, handmade in Japan

Kanzashi

Japanese Hair Pin View Collection

Every piece comes with a masu display case, mizuhiki packaging, and a masu badge.

Gift

Give Japan to someone you love.

KUMIKI masu jewelry gift box with hand-tied mizuhiki cord — traditional Japanese packaging included with every piece

The masu is a symbol of prosperity in Japan.
Every piece is delivered in a masu box with a hand-tied mizuhiki cord.

Explore Gifting
Masu Badge

Masu Badge

For those who choose a KUMIKI jewel,
we include a masu badge as a mark of ownership.

KUMIKI masu badge for women — included as a mark of ownership with every KUMIKI masu jewelry purchase
KUMIKI masu badge for men — included as a mark of ownership with every KUMIKI masu jewelry purchase
Discover More
KUMIKI bespoke masu jewelry — custom hinoki cypress and precious metal combinations, one-of-a-kind pieces by FOMUS LLC
Bespoke

One of a kind. Yours alone.

Metal, coating, ornamentation -
every detail is yours to choose.
We craft a KUMIKI that exists nowhere else in the world.

Explore Bespoke
Contact

Inquire

We welcome your questions about our collection.