▁used ▁as ▁an ▁architect ural ▁feature , ▁trim , ▁orn ament ▁or ▁facing ▁for ▁buildings ▁or ▁other ▁structures . ▁Cast ▁stone ▁can ▁be ▁made ▁from ▁white ▁and / or ▁grey ▁c ements , ▁manufact ured ▁or ▁natural ▁s ands , ▁carefully ▁selected ▁cr ushed ▁stone ▁or ▁well ▁grad ed ▁natural ▁gra vel s ▁and ▁min eral ▁color ing ▁p ig ments ▁to ▁achieve ▁the ▁desired ▁colour ▁and ▁appearance ▁while ▁maintain ing ▁dur able ▁physical ▁properties ▁which ▁exceed ▁most ▁natural ▁cut ▁building ▁stones . ▁Cast ▁stone ▁is ▁an ▁excellent ▁replacement ▁for ▁natural ▁cut ▁lim estone , ▁brown stone , ▁sand stone , ▁bl uest one , ▁gran ite , ▁sl ate , ▁cor al ▁rock , ▁tra vert ine ▁and ▁other ▁natural ▁building ▁stones . ▁ ▁Engine ered ▁stone ▁▁ ▁Engine ered ▁stone ▁is ▁the ▁latest ▁development ▁of ▁artificial ▁stone . ▁ ▁A ▁mix ▁of ▁mar ble ▁or ▁quart z ▁pow der , ▁res in , ▁and ▁p ig ment ▁is ▁cast ▁using ▁vac u um ▁oscill ation ▁to ▁form ▁blocks . ▁Sl abs ▁are ▁then ▁produced ▁by ▁cutting , ▁gr inding , ▁and ▁pol ishing . ▁Some ▁fact ories ▁have ▁developed ▁a ▁special , ▁low - vis cos ity , ▁high - str ength ▁poly ester ▁res in ▁to ▁improve ▁hard ness , ▁strength , ▁and ▁gl oss ▁and ▁to ▁reduce ▁water ▁absor ption . ▁ ▁Engine ered ▁mar bles ▁are ▁most ▁commonly ▁used ▁as ▁flo oring ▁for ▁large ▁commercial ▁projects , ▁but ▁unlike ▁ter azzo ▁are ▁not ▁cast ▁on ▁site . ▁Engine