PHYSICAL AND MECHANICAL DATA  The commercial name is Silver Gray  The Labradorite breed  Kovalyvske deposit  Bulk weight 2720-2740 kg / m3  Water absorption 0.02-0.08%  Compressive strength 180-220 MPa Wear 0.6-0.7 g / cm2 Natural radiation class 1 Class  * Any type of construction is allowed
