Buyers increasingly request blue fluorescence specifically for warmer colour grades

Rather than avoiding fluorescence altogether, some buyers are now specifically seeking blue fluorescence in H-to-J colour stones, where it can visually offset warmth and make a stone look whiter face-up.

• Blue fluorescence can counteract a faint yellow tint under UV-rich daylight, an effect most noticeable in warmer colour grades rather than in colourless D-to-F stones.
• This runs somewhat counter to older trade wisdom that treated any fluorescence as a mark against a stone regardless of colour grade.
• The fluorescence discount that has narrowed in top colours makes this an even easier trade-off to make than it was a year or two ago.

If budget favours a warmer colour grade, ask specifically about fluorescence rather than treating it as automatically undesirable. Contact us to see matched pairs of fluorescent and non-fluorescent stones at the same colour grade.