'Vantablack' is the darkest substance known to absorb up to 99.965% of visible light composed of nanotubes.
Vanta Black is a material developed by Surrey NanoSystems, a British nanotech specialist, rather than a nanomaterial.
The absorption rate of visible light in black is usually 95 ~ 98%, but the absorption rate of black black is 99.965% ....
I think it cropped the image.
The price is more expensive than gold or diamonds, and it seems that there will be many uses in the space technology and military fields in the future, but only the British sculptor Anish Kapoor who has an exclusive use contract for artistic purposes can use it.