1. Gold Standard Bluestone
This represents the highest grade of stone available, it also features superior aesthetic qualities. The cats paw (small holes) are distributed evenly and adds a natural beauty to the stone.
2. Silver Standard Bluestone
This represents a budget grade of bluestone without loss of inherent quality and longevity. It is typically used in more commercial applications where practicality and longevity are the main focus and the aesthetic qualities are secondary.
3. Bronze Standard Bluestone
This represents bluestone which main criterion is low price and has a wide variety of characteristics which includes large variations in the holes, colour and mineral content (which can cause excessive colour change in the stone).
Adhesive companies specify high grab fast set cement based adhesive for all types of bluestone.