The table screen is one of the few Chinese furniture forms that exists purely to be looked at. A scholar's desk might hold a brush rest, an inkstone and a screen, and the screen had no function beyond presenting a piece of stone at eye level — which made it the place where a good material was shown off, and by extension where stones were chosen for beauty rather than for use.
We cut this slab thin deliberately. A thick slab of the same colour would be cheaper to cut and would look opaque and heavy; at 8 mm, light reaches through the edge and the polish on both faces reads as depth. The trade-off is fragility, and we would rather say that than have you find out when it tips.
The stand is a finished hardwood. We do not claim a particular species, because suppliers vary it, and we would rather be vague than tell you it is rosewood when it is a stained substitute.