What do the different price levels of stone mean?
Price levels are based on availability, supply, and transportation. For example, the A or 1 price group represents natural stone that is readily available. These quarries are easily accessed by machinery with convenient transportation routes. However, natural stones in the D or 5 price group have limited availability and access. They tend to exist in remote locations where transportation is more difficult. Many times these natural stones are only accessible during certain times of the year due to weather conditions. These sort of obstacles result in price variations.