Bluestone is Limestone, together with bluestone from Belgium, bluestone from Vietnam is among the best quality. Some specifications are even better like water absorption, compressive strength and color consistency. Bluestone is ideal material for outdoor areas such as, driveway, swimming pools or gardens...
Bluestone from Vietnam nowadays becomes very popular especially in Europe markets. 
FINISHES: Sandblasted/ Honed/ Flamed/ Gothic/ Tumbled/ Bush-hammered...
MATERIAL: Bluestone (or limestone)
USAGE: Indoor or outdoor
BASIC SPECS: 
       CaCO3: +/-97%
       Gravity: 2,78g/cm3
       Water absorption: <0.05%
AVAILABLE POPULAR SIZES:
       200x200mm; 300x300mm; 300x600mm; 400x400mm; 400x600mm; 500x500mm; 600x600mm; 600x900mm...OR customized on request
       up to maximum width of 800mm and length of 1,300mm with thickness ranging from 20mm to 50mm
OTHER RELATED PRODUCTS: Profiles respective the mentioned-above sizes