Hainan grey basalt 1,high quality and best price 2,business type : factory manufacture Hainan grey basalt Material: Basalt,black basalt,basalt stone1) Finishes: Honed,flamed,sandblasted,Antique,Brushed.2) Dimensions: a) 305 x 305mm or 12 x 12" b) 400 x 400mm or 16 x 16" c) 457 x 457mm or 18 x 18" d) 600 x 600mm or 24 x 24" e) Thickness: 10mm (3/8"), 12mm (1/2"), and 20mm (3/4")f) Cut-to-size or ...