What Are The Differences Between Marble And Granite?

Composition and Formation

Marble is a metamorphic rock derived from sedimentary rock, primarily composed of carbonates. Its formation process is gentle, resulting in a relatively porous structure. Granite, on the other hand, is formed from the cooling and solidification of magma. Its main components are quartz, feldspar, and mica, and it is formed under high temperature and pressure, resulting in a dense structure.

Physical Properties
Marble has a relatively soft texture, with a hardness of only about 3 to 4. It is prone to scratches and wear under heavy impact or high-frequency friction, making it more suitable for low-frequency use scenarios.

In contrast, granite has high hardness and good wear resistance, able to withstand a certain degree of wear, scratches, and heavy pressure. Even with long-term use in high-traffic areas such as outdoor patios and indoor entryways, granite can maintain its surface integrity and is not easily damaged.

Appearance and Texture
Marble has a delicate texture, soft colors, and natural transitions, possessing a strong artistic beauty. It easily complements sophisticated design styles such as light luxury, new Chinese style, and French style, enhancing the overall decor. Granite, on the other hand, has a regular texture and a strong granular surface, with a stable and robust style, making it more suitable for industrial style, modern minimalist style, or outdoor decoration. The overall visual effect is more stable and understated.

Acid and Alkali Resistance
Marble's main component is calcium carbonate, which is sensitive to acidic substances and easily corroded, leaving marks or discoloration that affect its appearance. Granite, however, has stable chemical properties and strong acid and alkali resistance, making it less susceptible to corrosion.

Water Absorption Rate
Granite has a dense structure and low water absorption, providing good waterproofing and stain resistance; stains are difficult to penetrate. Marble has more pores and a higher water absorption rate, allowing moisture and stains to easily penetrate. Regular sealing and maintenance are required to prevent discoloration.

Price and Cost
Generally, granite is relatively affordable and requires almost no maintenance, offering high cost-effectiveness. Marble, however, is more expensive and requires regular waxing and sealing maintenance, resulting in higher maintenance costs. It is more commonly used in luxury residences and commercial spaces.

Radiation Risk
Some granite contains minerals such as potassium feldspar, which may contain trace amounts of radioactivity. When purchasing, it is important to check the testing report to ensure compliance with national standards. Marble is relatively safe in terms of its composition and has a low risk of radiation, but caution is still necessary.