High-quality granite stands out as the preferred stone for monuments, building facades, high-end countertops, and similar applications. This is primarily due to its comprehensive properties that balance durability, adaptability, processability, and environmental friendliness—making it a rare “all-around material” in the stone industry.

Physical Performance

The superior strength of high-quality granite is particularly notable: it has a Mohs hardness of 6–7, far exceeding the 3–5 of standard marble, and a compressive strength of 120–250 MPa. Even under long-term heavy loads or frequent foot traffic, its surface rarely develops scratches or damage. Its water absorption rate is generally below 0.5%—some high-end varieties like “China Black” even reach as low as 0.1%—effectively blocking moisture and rainwater to prevent internal cracking from water expansion. Additionally, its density of ≥2.6 g/cm³ reduces stain penetration, lowering long-term maintenance efforts.

Environmental Adaptability

High-quality granite performs exceptionally well in various environments. It withstands extreme temperature cycles from -30°C to 60°C and endures over 50 freeze-thaw cycles without cracking, making it ideal for cold northern regions. With SiO₂ content exceeding 65%, it boasts strong chemical stability and resists acid rain (pH levels below 4.0)—unlike marble, which is prone to weathering and whitening due to its calcium carbonate composition. Moreover, its color comes from inherent minerals, so even after long-term exposure to sunlight (over 2000 hours annually), its fading rate remains below 10%, preserving its original appearance.

Processability and Appearance Stability

High-quality granite’s structural advantages are clear: it has a dense, uniform texture with no obvious grain gaps or natural cracks, minimizing edge chipping or breakage during processing. Its yield rate reaches over 95%, significantly higher than the 85% of ordinary granite. It also supports precision processing, enabling text engraving and relief work with 0.1mm accuracy—engraved details rarely peel off. During mass production, its consistent color ensures cohesive visual effects for large-scale projects.

Eco-Friendly and Healthy Properties

This granite is suitable for all scenarios: it meets China’s National Class A Stone Standard, with an internal radiation index (IRa) ≤1.0 and external radiation index (Ir) ≤1.3, making it safe for indoor use (e.g., kitchen countertops, living room floors). Daily cleaning only requires water or neutral detergents—no frequent waxing is needed. With nano-protective treatment, its stain resistance improves further, and maintenance costs are 30% lower than ordinary stone.

Long-Term Value

Thanks to these properties, high-quality granite has an outdoor service life of 50–100 years—far longer than marble’s 5–10 years. It truly delivers “one-time investment, long-term benefits,” solidifying its position as an ideal stone that balances practical value and commemorative significance.