How does the hardness of granite compare to marble?

Granite and marble are two of the most popular natural stones used in construction and design, but they differ significantly in terms of hardness. Granite is an igneous rock composed mainly of quartz and feldspar, which makes it exceptionally hard and durable. On the Mohs scale of mineral hardness, granite typically scores between 6 and 7, making it resistant to scratches and wear.

Marble, on the other hand, is a metamorphic rock primarily made of calcite or dolomite. It is softer than granite, with a Mohs hardness rating of 3 to 5. This lower hardness makes marble more susceptible to scratches, etching, and wear over time, especially in high-traffic areas or when exposed to acidic substances.

The difference in hardness between granite and marble has practical implications for their use. Granite is often chosen for kitchen countertops, flooring, and outdoor applications due to its durability and resistance to damage. Marble, while elegant and timeless, is better suited for low-traffic areas like bathroom vanities, decorative accents, or indoor flooring where it can be maintained more easily.

In summary, granite is significantly harder than marble, making it a more durable option for high-use surfaces. However, marble's unique beauty and softer texture make it a preferred choice for applications where aesthetics take precedence over durability. Understanding these differences can help you make an informed decision when selecting the right stone for your project.