When selecting the perfect diamond, many factors influence its allure—from cut and clarity to colour and carat weight. Yet one fascinating and often overlooked characteristic is fluorescence. This subtle phenomenon can impact a diamond’s appearance and value in surprising ways. At Prins & Prins, where expertise in fine jewellery and diamond education is our hallmark, we believe understanding fluorescence empowers you to make confident, informed choices for your engagement ring or bespoke diamond jewellery.
What Is Diamond Fluorescence?
Diamond fluorescence refers to the glow some diamonds emit when exposed to ultraviolet (UV) light. This effect is caused by trace elements within the diamond’s crystal lattice reacting to UV rays, resulting in a soft luminescence—most commonly a blue glow, though colours like yellow, green, or white can also appear.
Fluorescence is invisible under normal daylight conditions but becomes noticeable in settings with strong UV lighting, such as nightclubs, certain outdoor environments, or under blacklight.
How Common Is Fluorescence in Diamonds?
Approximately 25% to 35% of diamonds exhibit some degree of fluorescence. It varies from none (no fluorescence) to very strong, with mild and medium strengths falling in between. At Prins & Prins, our GIA-trained gemmologists carefully evaluate fluorescence as part of the comprehensive grading process to ensure you understand how it might affect your diamond choice.
Does Fluorescence Affect a Diamond’s Appearance?
The impact of fluorescence on a diamond’s appearance depends largely on its strength and colour grade:
Mild to Medium Fluorescence: Often has little to no visible effect and can even enhance the diamond’s brilliance, especially in diamonds with a slight yellow tint (colour grades lower than G). The soft blue glow can counteract warmth, making the diamond appear whiter.
Strong to Very Strong Fluorescence: In some cases, this can cause a hazy or oily look, particularly in diamonds with higher colour grades (D to F). However, many strong fluorescent diamonds appear perfectly beautiful, and the effect varies between stones.
Is Fluorescence Good or Bad?
The perception of fluorescence is subjective. Some buyers actively seek diamonds with fluorescence for their unique character or potential value advantage, while others prefer no fluorescence for its predictability.
In the South African market, fluorescence can offer excellent value opportunities. Diamonds with mild to medium fluorescence often come at a slightly lower price point without compromising beauty, making them ideal for engagement rings where brilliance and sparkle are paramount.
What Should South African Buyers Consider?
When shopping for an engagement ring or bespoke jewellery piece in South Africa, consider these tips:
View the Diamond Under Different Lighting: Inspect the diamond in natural daylight and under UV light to observe fluorescence firsthand.
Consult a GIA-Certified Expert: Fluorescence is one of many factors affecting a diamond’s overall appearance. Guidance from trained gemmologists ensures you find the right balance for your preferences and budget.
Prioritise Personal Taste: Ultimately, your enjoyment of the diamond is what matters most. Fluorescence can be a charming feature or a negligible detail, depending on your eye and style.
Why Trust Prins & Prins for Your Fluorescent Diamond?
At Prins & Prins, we combine decades of experience with GIA-certified knowledge to offer you unparalleled insight into every facet of diamond quality. Our Cape Town showroom invites you to explore a curated selection of diamonds with varying fluorescence levels, accompanied by expert advice tailored to your unique needs.
We understand that purchasing an engagement ring or bespoke jewellery is a deeply personal journey. Our commitment is to provide transparent information and exceptional service, ensuring you feel confident and delighted with your investment.
Discover the Hidden Beauty of Fluorescent Diamonds with Prins & Prins
If you’re curious about how fluorescence can enhance your diamond choice or want to explore our exclusive collection, we warmly invite you to visit our Cape Town showroom. Alternatively, book a private consultation with one of our GIA-trained gemmologists who will guide you through the intricate world of diamonds with care and expertise.
Contact Prins & Prins today and take the first step toward finding your perfect diamond — a true testament to beauty and brilliance.
