How does the porosity of marble differ from granite?

Marble and granite are two of the most widely used natural stones in construction and design, but they differ significantly in terms of porosity. Porosity refers to the presence of tiny pores or voids within a material, which can affect its durability, maintenance, and suitability for specific applications.

Marble is a metamorphic rock formed from limestone, and it tends to have a higher porosity compared to granite. This means marble can absorb liquids more easily, making it more susceptible to staining and etching from acidic substances like lemon juice or vinegar. As a result, marble requires regular sealing to protect its surface and maintain its appearance.

Granite, on the other hand, is an igneous rock composed mainly of quartz, feldspar, and mica. It has a much lower porosity, making it more resistant to water absorption and staining. This inherent durability makes granite a popular choice for high-traffic areas like kitchen countertops, where it can withstand spills and heavy use with minimal maintenance.

In summary, the porosity of marble is higher than that of granite, which influences their respective uses and care requirements. While marble offers a luxurious and elegant aesthetic, granite provides greater durability and ease of maintenance, making each stone suitable for different applications depending on the desired outcome.