Ключевые слова: alloy, aluminium, angle, block, brass, brown, copper, corner, coronal section, cross section, cube, cuboid, dice, diversity, edge, facet, gem, geometric, glass, glossy, lateral cut, lumber, marble, marbled, material, metal, metallic, mineral, pile, plastic, polished, red brass, side, smooth, solid, square, stack, steel, stone, timber, variation, volume, wood, wood grain, wooden,