... Hai Stone Factory supply slate board slate board various shape and any size are acceptable !!! Products details :1 ... :black,green,grey,rusty3,material :slate4,shape : square , heart shape ,olong , triangle , round ,Irregular shape, or as your demend 5,seaworthy package ... 40x40cm Round: 10x10;20x20,25x25;30x30;35x35;40x40,50x50cm Heart: 10x10;20x20,30x30,35x35,40x40cm Oval: 20x10;30x15;35x20cmThickness ...