I dont have access to the up-to-date information about pricing of different stones in the market. However, according to various sources, quartzite is generally considered to be more expensive than other natural stones such as granite or marble due to its hardness, durability, and unique patterns. The price of Gontero quartzite specifically may also vary depending on factors such as its quality, availability, and location. It is best to consult with a reliable stone supplier for the latest pricing information.