Porcelain sculptures are delicate artworks vulnerable to extreme temperatures. Recognizing thermal damage early can preserve their value and beauty. Here are key signs to watch for:

1. Cracks and Fractures: Sudden temperature changes cause thermal stress, leading to hairline cracks or visible fractures, often radiating from stress points.

2. Glaze Defects: High heat may cause glaze to bubble, peel, or develop a cloudy appearance. Look for uneven textures or areas where the glaze has detached.

3. Discoloration: Prolonged exposure to heat can alter colors, turning whites yellowish or causing vibrant hues to fade. Dark spots may indicate localized overheating.

4. Warping or Distortion: Subtle bending or misshapen areas suggest the sculpture softened under heat and cooled unevenly.

5. Surface Pitting: Tiny holes or roughness on the surface often result from rapid temperature shifts damaging the clay body.

To assess damage, examine the sculpture under bright light and gently run fingers over the surface. Consult a conservator for severe cases. Proper storage away from direct heat sources is crucial for longevity.