Direct Answer: Cracks significantly affect jade value, but the impact depends on type, size, location, and quantity. Through-going cracks can reduce value by over 50%; minor surface lines have less impact. Nanhong naturally has many cracks as a variety characteristic.
📖Detailed Analysis
Types of Jade Cracks and Their Impact
"Cracks" and "stone lines" are two different concepts in jade, with very different impacts on value.
Key Factors
Cracks vs Stone Lines: "Cracks" are post-formation breaks you can feel with a fingernail; "stone lines" are natural growth lines that have healed and feel smooth.
Location Impact: Cracks in prominent positions have the greatest impact; those in hidden areas have less impact.
Through-going Cracks: Cracks penetrating the entire piece affect both aesthetics and structural safety.
Variety Differences: Nanhong naturally has many cracks (accepted by market); jadeite and Hetian jade cracks have greater value impact.
❓Related FAQ
Can I still wear a bangle with cracks?
Minor stone lines are fine. Through-going cracks risk breaking under impact - have a professional assess severity.
Will cracks grow larger over time?
Under normal wear and care, cracks generally do not expand. But impacts or extreme temperature changes may cause expansion.
Is jade with cracks worth buying?
Depends on crack severity and price discount. For collection-grade jade, choose pieces with minimal or no cracks.