The designer Byung Hoon Choi reveals himself as a true artist. He trusts his craftsman instincts to carve and polish these "furnitures" out of basalt as if they were sculptures.
In this case these rocks really seem to come from zen gardens, mainly because what impresses the most is the simplicity in them. The contrast between natural and crafted, the lightness of the form and the weight of the mass. In the end they might just be utilitarian, but as you can see aspirations outpace this condition and there's also harmony and peace, working together with the function.
More of Byung's objects in the images below, and you can find much more imagery of his work out there: his website.