"A baluster is a moulded shaft, made of stone or wood and sometimes metal, supporting the coping of a parapet or the handrail of a staircase. Multiplied in this way, they form a balustrade. " (Abstracted from Google Wiki).
China Stones Inc. is professional manufacturer and supplier of stone baluster or stone balustrade, such as marble baluster (marble balustrade), granite baluster (granite balustrade), sandstone baluster (sandstone balustrade), etc.
The baluster balustrade made by China Stones Inc. could be round, square, or any special mould as per drawing or sample.