Our Vietnam Lava stone have 2 kind of quality. Lava stone without hole (basalt without holes) and Lava stone with hole (Basalt with holes). Typical size will be: Stepping Stone (Irregular size) - cm Dia 30-50cm, thickness will be 3cm or 5cm Dia 40-60cm, thickness will be 3cm or 5cm. Second type are cut to size 30x30x3cm or 30x30x5cm; 30x60x3cm or 30x60x5cm; 50x50x3cm or 50x50x5cm; 60x60x3cm or 60x60x5cm; 60x90x3cm or 60x90x5cm; 60x120x3cm or 60x120x5cm. Other size we can produce as your request like Skirting, Paving, Kerb,... Our Lava stone has been exporting to many countries like Korean, Japan, Australia, Germany,....