Lab grown pink diamonds, typically made using CVD technology, may shift in colour under UV light due to structural distortions or post-growth treatments.
- When exposed to UV light, the diamond’s lattice structure temporarily absorbs and reflects different wavelengths of light, causing a color shift.
- This change is temporary and returns to normal once removed from UV exposure.
Additionally, lab grown diamonds with strong fluorescence can appear more vibrant under UV or natural sunlight and slightly different under artificial lighting.