Diamond Fluorences | Natural Diamond Or Lab Diamond?
3 min read

Diamond Fluorences | Natural Diamond Or Lab Diamond?

💎 What Is Diamond Fluorescence & Can It Help You Spot a Real One?

When it comes to diamonds, it’s not just about how icy they look under the spotlight — it’s also about what they do under UV light. Enter diamond fluorescence, a hidden glow that could tell you a lot about the stone you’re holding. But what exactly is fluorescence, and can it help you tell if your diamond is natural or lab-grown? Let’s break it down.

🌟 What Is Diamond Fluorescence?

Fluorescence is the soft glow a diamond gives off when it's exposed to ultraviolet (UV) light, like a blacklight. Around 25–35% of natural diamonds fluoresce — most commonly in a blue hue. This glow disappears the moment the UV light is removed.

It’s completely natural and happens because of trace elements (like nitrogen or boron) that got trapped inside the diamond during its formation deep in the Earth.

🔬 Fluorescence & Diamond Identity

So how does fluorescence help in identifying whether a diamond is natural or lab-created?

Here’s what you need to know:

  • Natural Diamonds: Often show medium to strong blue fluorescence under UV light. The glow tends to be consistent and smooth.

  • Lab-Grown Diamonds: Might show different types of fluorescence — such as orange, green, or no glow at all — depending on how they were made (HPHT or CVD methods). Some might also show a cross-hatch pattern or uneven glow.

That being said, not all natural diamonds fluoresce, and some lab diamonds are made to mimic natural ones closely. So fluorescence alone isn’t a foolproof test — but it’s a solid clue.

💡 How Can You Test It Yourself?

Want to put your diamond to the test? Try this:

  1. Get a UV Light (a blacklight works best — even those small handheld ones from Amazon).

  2. Turn Off The Lights and shine the UV light on the diamond.

  3. Observe the Glow:

    • Blue glow? Likely natural.

    • Green, orange, or no glow? Might be lab-grown or treated.

Still not 100% sure? Bring it to Johnny’s Ice & Co. and let the pros put it under our advanced scopes. We’ll let you know what you’re really working with 🔍💯.

💬 Final Thoughts

Fluorescence is one of those cool little features that can help you understand the origin of your diamond. While it shouldn’t be the only test you rely on, it’s a great way to start a conversation about what makes your ice real, rare, and raw.

Stay shining 💎 and always know what you're wearing.

Need help identifying your diamond?
Slide by Johnny’s Ice & Co. at 621 Beville Rd, Daytona Beach, FL, or hit us up on IG @johnnysiceandco. We’ll take care of you the way only family does.