Bronze, marble, and wood sculptures each age in distinct ways due to their material properties. Bronze develops a protective patina over time, a greenish or brownish layer caused by oxidation, which actually preserves the metal beneath. This natural process enhances bronze's durability, often making it last centuries with minimal structural degradation.

Marble, while elegant, is more vulnerable to environmental factors. Acid rain, pollution, and even touch can erode its surface, leading to gradual loss of detail. Unlike bronze, marble lacks a self-protecting layer, requiring frequent maintenance to prevent staining and weathering.

Wood sculptures face the most dramatic aging process. They are prone to cracking, warping, and insect damage, especially in fluctuating humidity. Without proper treatment, wood can decay within decades. However, some hardwoods like oak or teak may last longer if sealed and stored in stable conditions.

For collectors, bronze offers the best longevity with its self-preserving patina, while marble demands careful conservation. Wood, though warm and organic, requires the most upkeep to combat natural deterioration. Understanding these differences helps in choosing and preserving sculptures for generations.