Blue fluorescence under UV, impact on hue in sunlight, resale perception, and when it can help.
Roughly ~25–35 % of naturals exhibit blue fluorescence under long-wave UV—it can mellow faint yellow body colour in daylight with tradeoffs in vintage liquidity perception.
- None / faint: resale liquidity easiest; negligible visual shift.
- Medium: often imperceptible but may appear “milky” in rare combos—review HD video.
- Strong / very strong: scrutinise cloudy overtones esp. on high-clarity whites.
- Other colours exist (yellow, green) yet remain niche—consult specialist imaging.
