Black persimmon [Powerswood]
Black persimmon
| The power of wood | Pursuit of individuality, elegance, self-improvement |
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Kurokaki is also known as "the tree beloved by Tokugawa Ieyasu," and is used for making kuro-kaki inkstone boxes and other products.
It has been speculated that the patterns on black persimmons may be due to genetic factors, the influence of soil, microorganisms, and tannins.
However, in 2017, a paper was published about black persimmon titled "Chemical, mineralogical and microbiological characteristics and crystal formation of biominerals in black persimmon."
According to the paper, the presence of organic matter and microorganisms was confirmed in the black parts of the black persimmon.
In the white part of the root of the black persimmon, microorganisms such as cocci absorb Ca, P, S, Cl, etc. and form biological apatite.
As it grows, it absorbs more elements and turns black.
It has also been proven that over time, black stripes (peacock grain) form in the sapwood of the trunk and silicified wood (plant fossils) is formed.
It is known as a "mysterious precious wood" that is said to be found with a probability of only one in 10,000.
