















tumi-isi(RARE WOOD) | Black Persimmon Kurogaki Edition 黑柿木
What is Kurogaki?
Kurokaki, an exceptionally rare tree species, is a result of a mutation in persimmon trees. It is believed to occur in only one out of every 10,000 trees, primarily on trees over 100 years old. Since the Nara period, Kurokaki has been highly valued as a material for crafts. Due to its immense value, most of it is thinly sliced and used for boxes and decorative materials.
A4 meticulously collected thick Kurokaki wood and crafted tumi-isi. The color scheme created by nature is a masterpiece akin to a sumi-e painting. The price of Kurokaki fluctuates with the seasons, but considering the imminent depletion of timber, it seems unlikely that its value will decrease further. Even a single lump of Kurokaki wood is likely to become valuable.
About tumi-isi
These objects provide an interactive and visual way to nourish your sense of balance and creativity. They are made from the woods of Yoshino Cedar and Yoshino Cypress and each block hand bevelled into geometrical asymmetry shapes by local artisans in Nara, Japan.
Each block is made with the finest 100-year wood and coated with natural paints. Please try your hand at building your own tumi-isi tower or bridge and discover your own balance.
Tumi-isi is for everyone, grownups might get more hooked.
JAPANESE CEDAR & CYPRESS
Locally grown in the Yoshino region of Nara Prefecture where high quality of cedar and ctpress are famous for. Combining a beautiful grain, fine touch, light weight, and soft features, these are materials that have supported the quality lifestyle of Japanese people since long ago. From the procurement of the wood to the processing, coating, assembly, and inspection, this is “All made in Japan”, with every step carried out within Nara Prefecture.
From Hand to Hand
tumi-isi have a color that is hand painted using natural paint. You don’t have to worry about small children playing with them. Also, every block is individually processed and cut differently, made by craftsmen who spare no effort. We cherish this form and color born from hands, and from the hands that make to the hands that play, we want to be genuine with all “hands”.
Balance Sculpture
The light that is made from the many sides is like a sculpture. The simple shape and color have an outstanding compatibility with modern interiors. Please discover your own beautiful balance and decorate your own space. (A trick for looking beautiful is the “feeling of tension” !)
●1 BOX : 5 BLOCKS
●SIZE : ABOUT 40mm〜90mm SQUARE
●PACKAGE SIZE : W240mm×H175mm×D80mm
●WEIGHT : ABOUT 500g-700g (1BOX)
●MATERIAL : JAPANESE CEDAR & CYPRESS
●100% MADE IN JAPAN_NARA