Under natural light, a diamond sparkles with familiar brilliance.
But under a black light, some reveal a secret — a soft blue luminescence known as fluorescence.
This quiet phenomenon has fascinated gemologists and collectors alike. At Springer’s Jewelers, it’s often the detail that turns curiosity into appreciation.
What Causes the Glow
Fluorescence occurs when trace elements within a diamond’s crystal structure — most often nitrogen — react to ultraviolet light.
Roughly one in three natural diamonds will emit a glow, most commonly blue, though hues of yellow, green, or orange are occasionally seen.
How It Affects Appearance
For most diamonds, fluorescence has little to no visible effect in everyday lighting.
In fact, it can sometimes enhance near-colorless stones, adding a cool, lively brightness.
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Faint to Medium Fluorescence: No impact on brilliance; adds subtle character.
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Strong to Very Strong Fluorescence: May appear slightly hazy in rare cases.
At Springer’s, every diamond is viewed under multiple light sources — ensuring its beauty is consistent in all settings.
Natural, Never Added
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Fluorescence is not a treatment; it’s a natural fingerprint formed deep within the Earth.
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Each occurrence is unique, a result of the diamond’s geological environment.
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To gemologists, it’s one more chapter in the stone’s billion-year story.
Fluorescence in Perspective
Does fluorescence affect value? Sometimes — slightly.
Diamonds with strong fluorescence may be priced lower, though many collectors find this distinction intriguing rather than limiting.
Diamonds require no special maintenance.
Keep your piece clean and free of residue so light can travel freely through the stone.
For professional care, Springer’s Jewelers offers expert cleaning and inspection to preserve each facet’s natural brilliance.
The Quiet Magic of Light
So — do diamonds glow under black light?
Yes, some do. And in that fleeting glow lies one of nature’s most graceful surprises.
Fluorescence doesn’t change a diamond’s value to light; it deepens its mystery.
It’s a reminder that true beauty often reveals itself where few think to look.
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Our Locations
Portland, ME | Bath, ME | Portsmouth, NH | Manchester, NH
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